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Water Potential of Potato Tuber Cells

- Water Potential of Potato Tuber Cells AIM: To find the water potential of potato tuber cells. HYPOTHESIS: When cells are put in a solution with a different water potential than inside of them, cells will gain or loose water. If concentration of solution is the same, there will be no change in mass. THEORETICAL BACKGROUND: If a sample of tissues immersed in solution of varying water potential (concentration of water molecules), the cells will loose or gain water by osmosis....   [tags: Lab Report]

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The Effects of Sucrose Molarity on Cells in the Stem Tuber of a Potato

- The Effects of Sucrose Molarity on Cells in the Stem Tuber of a Potato Planning In this investigation I am trying to find out what molarity of sucrose solution is same as the molarity of sucrose in the cells of a potato. In this experiment I am going to change the molarity of the sucrose solution out the cells of potato. I predict that if the molarity of sucrose solution outside the cells is isotonic to the molarity of the sucrose inside the cells then there will be no change in weight of the potato disks....   [tags: Papers]

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Determining the Water Potential of Potato Tuber Cells

- Determining the Water Potential of Potato Tuber Cells I will carry out an investigation that will enable me to determine the water potential of the tested potato tuber cells. Water Potential is the measurement of the tendency of water molecules to move from one place to another. (Ridge 1991) Water always moves down the water potential gradient, therefore moving from an area of higher water potential to an area of lower water potential. Equilibrium is reached when the water potential in one region is equal to the water potential in another region....   [tags: Lab Report]

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Investigation of Water Potential of Potato Tuber Cells

- Investigation of Water Potential of Potato Tuber Cells Introduction This experiment is to find out the water potential of potato cells. Water potential is the ability of water to move and is represented by the Greek letter ψ (pronounced “sy”). It tells us which way water will move and how fast. Water potential is always measured as a negative number; this is because the water potential of pure water at atmospheric pressure is zero therefore the stronger a solution is the more negative the number....   [tags: Biology Lab Report]

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Investigating the Concentration of Plant Cell Sap Using Potato Tuber Cells

- Investigating the Concentration of Plant Cell Sap Using Potato Tuber Cells An experiment to work out the concentration of plant cell sap using potato tuber cells First of all and the most important are the safety precautions we will take throughout this experiment · Wear safety glasses to protect eyes · Handling the acids carefully · Careful while using kitchen knife (And all the simple things such as not running etc.) Another important aspect before we start is making the experiment a fair test....   [tags: Papers]

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Investigation of the Effect of Concentrations of Sucrose Solutions on Potato Tuber Cells

- Investigation of the Effect of Concentrations of Sucrose Solutions on Potato Tuber Cells Aim: To find the rate of reaction between different concentrations of Sodium Thiosulphate and a constant concentration of Hydrochloric acid and to follow the speed at which Sulphur is formed. Hypothesis: Rate of reaction is determined by the concentration of reactants. The hypothesis is that the rate of reaction of Sodium Thiosulphate with a constant concentration of Hydrochloric acid will increase as the concentration of Sodium Thiosulphate increases....   [tags: Papers]

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Tuber Cells

- DETERMINATION OF THE WATER POTENTIAL OF POTATO TUBER CELLS. Method. Five sucrose solutions with varying molarity and one control containing distilled water were prepared and poured into test tubes. The potato discs were dried, weighed and added to the test tubes. The discs were then weighed again after a period of 24 hours. The percentage change in mass was then calculated. Apparatus.  Specimen tubes with stoppers x6  1cm3 diameter cork borer  razor blade  filter papers  balance  distilled water  sucrose solutions with varying concentrations  potato cut into small discs Results....   [tags: essays research papers]

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Investigating Osmosis in Potato Tissue

- Investigating Osmosis in Potato Tissue Aim To estimate the concentration of sucrose in potato tissue. Hypothesis ========== I believe that the potato tissue that has been in the hypotonic (0.1M sucrose) solution will be more turgid than before, while the tissue in the isotonic (0.3M sucrose) will be similar to its previous state. The tissue that has been in the hypertonic (0.5M sucrose) should be far more placid than it was before. This is because of osmosis - water diffusing in and out of the potato tissue cells....   [tags: Papers]

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Biological Effects on Potato

- Biological Effects on Potato Potatoes, like all other vegetables contain the enzyme catalase, which breaks down the toxic waste product of hydrogen peroxide. Potatoes have an unusual response to long exposures of light, where the chemical properties are altered within the cells. This can be seen as the surface changes green in colour. Storage conditions of potatoes are therefore important, to ensure potatoes remain in the original state after cultivation. Within this assessment, the effects of how light intensity within storage of potatoes effect the rate of catalase activity will be investigated, and a suitable experiment to obtain results showing this will be...   [tags: Papers]

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Determining the Water Potential of Potato Tubers Using Gravimetric anc Chardakov Techniques

- Determining the Water Potential of Potato Tubers using Gravimetric and Chardakov Techniques 1. INTRODUCTION: Water potential (W) is the measure of free-energy status of water in plant cell, which is the driving force governing the movement of water into and out of the plat cell and affect various metabolic activities (O’Leary, 1970). Water potential is depends on different solute concentrations, pressure and matrix a particle; measured in Mega Pascal’s (MPa) and written as: W = s + p + m In plants dissolved solutes such as ions, sugars, proteins, amino acids and other substances decrease the availability of free energy and induce solute potential (S) , having a negative value....   [tags: the measure of free energy status]

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The Effect of Osmosis on Potato Cells

- The Effect of Osmosis on Potato Cells Introduction Osmosis is the movement of water molecules from an area of low concentration (lots of water) to an area of high concentration (little water) through a semi permeable membrane. A semi permeable membrane is a membrane that only lets selected molecules to pass through it. In a plant water is taken into the roots by the process of Osmosis. This is because the cells inside the roots have a higher concentration than the soil outside the roots....   [tags: Papers]

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The Effects of Osmosis on Potato Cells

- The Effects of Osmosis on Potato Cells Introduction The aim of this investigation is to see the effect of varying concentrations of glucose solution on the amount of osmotic activity between the solution and a potato chip. An investigation into Plasmolysis in onion cells was undertaken prior to this experiment, in order to gain some knowledge of osmosis to enable a hypothesis to be formed. Preliminary Work and Scientific Knowledge ========================================= Osmosis is defined as the net movement of water molecules from a region in which they are highly concentrated to a region in which they are less concentrated....   [tags: Papers]

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Water Potential of Potato Cells

- Water Potential of Potato Cells Aim: To demonstrate the Water Potential of Potato Cells. Objectives: · To show the water potential of potato cells using various measured concentrations of a sucrose solution and pieces of potato. · To record and analyse data to verify observed results. · The method and procedure was carried out as per instruction sheet. Observations: The experiment shows that the lower the concentration of the sugar solution, in the Petri dish, the mass of the potato increased....   [tags: Lab Report]

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Investigating Osmosis in Potato Cells

- Investigating Osmosis in Potato Cells Planning: Aim:- To investigate the effect of different concentrations of sucrose solution, on potato cells Osmosis:- Osmosis is the passage of high water concentration through a semi-permeable membrane to a region of low water concentration, i.e. the passage of water. Explanation of osmosis For osmosis to occur there must be; semi-permeable membranes are very thin layers of material (cell membranes are semi-permeable) which allow some things to pass through them but prevent other things from passing through....   [tags: Papers]

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Osmosis in Potato Cells

- Osmosis in Potato Cells Aim === The aim of my experiment is to investigate the effect of glucose solution on osmosis in potato chips. I shall be observing how the mass of the potato chip changes in different concentrations of glucose solutions. Simply, will the effect of the action of osmosis be affected by the concentration of the solution. Introduction ============ Knowing that osmosis (a diffusion of water) will occur across a semi-permeable membrane whenever there is a difference between the water concentrations on the two sides of the membrane, and knowing that when this happens to cells they will either become turgid if water flows into them,...   [tags: Papers]

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Osmosis in Potato Cells

- Osmosis in Potato Cells Plan Introduction Given that osmosis is the movement of water molecules by diffusion from a place where the water molecules are in a higher concentration (high water potential) to a place where the water molecules are in a lower concentration (low water potential) through a partially permeable membrane, the experiment to test osmosis in potato cells was set up. The experiment would prove the theory of osmosis and determine whether the concentration of water in the solution surrounding the potato was higher or lower than that of the water concentration inside the potato....   [tags: Papers]

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Osmosis in Potato Cells

- Osmosis in Potato Cells I am going to do an experiment to find the concentration of solute in potato cells. In order to find the best way to do this experiment I am going to do a preliminary test first. For my preliminary test I decided to use potato cylinders 3cm long and I would see if the cylinders increased or decreased in mass. I used salt solution in three different concentrates: 0.0M, 0.5M and 1.0M. I put 20cm3 of each concentrate into 3 different boiling tubes, which were then placed in test tube racks....   [tags: Papers]

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Osmosis in Potato Cells

- Osmosis in Potato Cells In this investigation I will be investigating the amount of osmosis in potato cells and whether osmosis and potato mass changes in different strengths of sugar solutions. I will do this by putting a constant amount of potato in solutions with steadily increasing sugar contents. Preliminary: I decided to under take a preliminary experiment to find out whether there are any problems or hitches that would have to be sorted out before the real experiment....   [tags: Papers]

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Pollan´s Theories and the Potato

- Pollan has a few positions regarding the nature that the potato satisfies and its connection to politics, production, and his own personal life. His view regarding the desire that the potato satisfies is compared with the idea of the sublime. Pollan states that the sublime is “mostly a kind of vacation in both a literal and moral sense” (184) and that nature itself is a counter to that. Agriculture can be described as a method of control of nature (in this case, particularly with genetics). Thus the potato (and its representative, the NewLeaf) are introduced as the manifestation of our desire to control....   [tags: agriculture, potato, genetic crops]

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The Great Potato Famine

- The Irish Potato Famine started in the year 1845. When the potatoes were harvested, a few days after, they started turning into a slimy, decaying, and blackish ball of rottenness. The reason this happened was due to the organism Phytophthora Infestans. 750,000 people died. Between 1846 and 1850, the population of Ireland dropped by 2 million which represented 25% of the total population (The Great Famine of 1845, 2013). It cut the population almost in half. Pre-Columbian farmers discovered the potato about 7,000 years ago in the Andes Mountains (Potato History, 2014)....   [tags: Irish history, potato history]

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The Great Potato Famine

- A great famine occurred in Ireland from around 1845 to about 1852 and devastated the country. Approximately one million people died of starvation or diseases caused by this famine, and about one million more people emigrated Ireland and moved to other countries to try to find a better life. One country that a lot of people moved to is the United States. Numerous people immigrated to the U.S. and created settlements all around the country. To provide for themselves in these settlements, most of the people farmed the land because that was what they knew how to do....   [tags: Ireland, potato blight]

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Determining the Water Potential of Potato Cells

- Determining the Water Potential of Potato Cells Results table Sucrose (1%) Initial mass of discs(g) Final mass of discs(g) Change in mass(g) Change in mass(1%) 0.0/distilled water 1.82 2.13 0.31 17.8 0.1 1.77 1.84 0.07 3.9 0.2 1.76 1.83 0.07 3.9 0.3 1.86 1.71 -0.15 -8 0.4 1.73 1.47 -0.26 -15 0.5 1.88 1.35 -0.49 -26 Trends and Patterns There is negative correlation on the graph so water is moving from high concentration to low....   [tags: Biology Lab Report]

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Finding the Water Potential of Potato Cells

- Finding the Water Potential of Potato Cells Aim: Our aim was to discover the water potential of potatoes cells using different concentrations of sucrose solution Science: Osmosis is 'the movement of water molecules from a region of higher water potential to a region of lower water potential through a semi-permeable membrane' www.s-cool.co.uk 'Water can move between cells (unligninified) freely as the cell walls are permeable. However its movement is controlled by a number of factors, which are given names; solute potential ([IMAGE]), Pressure potential (+ Matrix potential =0 normally)([IMAGE]) and water potential ([IMAGE])....   [tags: Biology Lab Report]

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Investigating the Strength of Cytoplasm in Potato Cells

- Investigating the Strength of Cytoplasm in Potato Cells AIM To investigate the strength of cytoplasm in potato cells. VARIABLES Strength of solution Weight of potato Length of potato Volume of solution Temperature of the room Type of potato Size of potato WHAT I ALREADY KNOW I know that osmosis is when water molecules move from a weak solution to a strong solution through a semi-permeable membrane. PREDICTIONS I predict that the stronger the salt solution is the more likely the potato will weigh less than what it did at the start of the experiment....   [tags: Papers]

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Measuring The Rate Of Osmosis In Potato Cells

- Measuring The Rate Of Osmosis In Potato Cells Skill Area P. Osmosis is defined as free water molecules diffusing from a high concentration to a low concentration through a semi-permeable membrane. Variables - The rate of osmosis effected by many different living things, temperature of the solutions, surface area over which it can occur, Volume of solution, Volume of potato, distance through which the free water molecules have to pass and finally the difference in concentration of the solutions....   [tags: Papers]

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The Global Distribution Of Potato

- The global distribution of potato may be investigated by crop distribution data available at the countries levels through various databases of agricultural organizations. The main potato-producing and distributing countries are Russia, Poland, China, Germany, the United States, India and U.K. One could say that the potato is a nontraded crop which is produced, processed, traded and consumed mostly locally and which is less affected by international price adjustments. Others assume a single world market for the potato, which is characterized by perfect price transmission and in which all country level prices are determined by a single world market price....   [tags: International trade, Globalization, Trade, Potato]

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Investigate the Water Potential of Potato Cells

- Investigate the Water Potential of Potato Cells Introduction In my investigation, I hope to determine the water potential of potato cells. The plant material I will use in my investigation will be potato chips, which I will cut myself prior to the investigation. I hope to find the concentration of a solution where the chip stays the same mass and length, which will tell me that the water potential inside the cells is the same as the water potential outside the cells. Background Osmosis is defined as the movement of water through a semi-permeable membrane....   [tags: GCSE Biology A2 A-Level Coursework]

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Investigating Osomotic Potential of Potato Cells

- Investigating Osomotic Potential of Potato Cells Apparatus ========= Apparatus Use Boiling tubes To put the chips an solution in Potato To get the chips Cork borer/rod To cut the potato into chips Distilled water To dilute sugar Sucrose solution To show the process of osmosis Test tube rack To put the boiling tubes in Blade To cut the chips to the correct size Cutting mat To cut the chips on Measuring cylinder To measure out the solution Ruler To measure the length of the chips Method ====== I will first collect all of my apparatus....   [tags: Papers]

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Great Potato Famine

- The Irish Potato Famine occurred in 1845 and had killed tons of people. Over 750,000 people had died and more than a million had emigrated. At the time Ireland’s population was only about 8 million so this famine had devastated many families. The people of Ireland at this time were so dependent upon the potato that it was a main staple. The Irish would consume the potato with almost every meal, and for some the potato was the only food that they were ever able to eat. The famine was produced by a protist called Phytophthora infestans (P....   [tags: The Irish Potato Famine]

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Great Potato Famine

- From about 1845 to around 1852 a great famine occurred in Ireland. It was very devastating for lots of people. Countless people died due to food shortages and others became ill and died later. The famine was caused by a fungus-like protest, which caused potatoes to rot. The Irish people depended heavily on potatoes, so when their main crop failed, the people were left without food to eat and without anything to sell for money. Many other people that did not die in Ireland immigrated to other countries like the United States in search for a better life....   [tags: The Irish Potato Famine]

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Comparing Animal Cells to Plant Cells

- ... Most of the chemical reactions of the cell take place in the cytoplasm. The “powerhouse” or the “energy generators” of both plant and animal cells are the mitochondria. These substances convert the sugar and other organic molecules in the cell to produce ATP (adenosine triphosphate) – required as a source of energy for the chemical reactions of a cell. Furthermore, both cells have a cell membrane. The cell membrane is like the guard to a cell and controls what enters and leaves it. It is responsible for the absorption of important nutrients (e.g....   [tags: structures, cells, powerhouse]

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Compariosn of Animal Cells and Plant Cells

- ... Plastids are also located in a plant cell. They are organelles that store and make compounds inside a plant cell. A chloroplast is the most important plastid inside a plant cell. The chloroplast makes light energy from the sun light and makes into sugars and oxygen. Chloroplasts helps make the food and oxygen that humans need everyday. Plant cells have a large central vacuole. The plant cells are able to push water into the vacuoles and then produces turgor preasure which reinforces the plant and makes it rigid....   [tags: nucleus, energym ribsomes, cells]

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Human Embryonic Stem cells and Induced Pluripotent Cells

- Human Embryonic Stem cells and Induced Pluripotent Stem Cells are two modern methods of research; and treatment being aimed at the treatment of cancer, and many degenerative and genetic diseases. Stem cells are cells with the ability to develop into a cell of a different type, some types of stem cells are able to differentiate or change into a cell which is specific and functional to a specific tissue or organ system. This unique ability is what many scientists are trying to focus towards regeneration of different tissues, or the creation of new tissue to help cure, or treat diseases like cancer, multiple sclerosis, and alzheimer's....   [tags: stem cells, human embryonic, cells]

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Investigating the Concentration of Water in Potato Cells Through Osmosis

- Investigating the Concentration of Water in Potato Cells Through Osmosis Introduction Osmosis is defined as the movement of water molecules from an area of high water concentration to an area of low water concentration, across a semi-permeable membrane. I will be experimenting to find the concentration of water in potato cells through Osmosis. Aim The aim of this investigation is to analyze and experiment in order to study the concentration of water in potato cells through Osmosis....   [tags: Biology Lab Report]

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The Effects of Glucose Concentration on Osmosis in Potato Cells

- The Effects of Glucose Concentration on Osmosis in Potato Cells Apparatus: - * Potato * Blade * Cork borer * Stopwatch * Glucose solution * 50cm3 Measuring cylinder * Electronic Balance (scale in grams) * Five 200cm3 beakers * Forceps * Labels * Water bath Procedure: - * First cut the potato into half * Using the cork borer cut the potato to obtain five cylinders of potatoes (Make sure that the potato cylinders are from the same potato as the potato tissues maybe different from different aged potatoes) * Cut the potato cylinders down to the same length * Measure the mass of the each potato cylinder * Note do...   [tags: Papers]

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The Effect of Different Concentrations of Sucrose Solutions in Potato Cells

- The Effect of Different Concentrations of Sucrose Solutions in Potato Cells Prediction: I predict that the potato cylinder that is immersed in distilled water will increase in size the most out of all the potato cylinders. I think this because, in this solution there will 10ml of pure water, no sucrose, which means the potato can absorb the most possible water through osmosis, there are no molecules that can‘t be absorbed. Whereas in the other solutions, the sugar molecules won’t be able to travel through the potato’s membrane because it is semi permeable so through osmosis, only water molecules can diffuse from the higher concentration outside the potato to th...   [tags: Papers]

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Investigate the Osmosis of Potato Cells in Various Salt Solutions

- Investigate the Osmosis of Potato Cells in Various Salt Solutions Introduction I have been asked to investigate the effect of changing the concentration of a solution on the movement of water into and out of potato cells. I will be able to change the input of my experiment. The input variable will be the concentration of the solution. The 100% solution is sodium chloride dissolved in water (salt water). This will be referred to as the 100% solution from now on. But the type of solution is not important as Osmosis is all about differences in concentrations....   [tags: GCSE Biology Osmosis Coursework]

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An investigation of the glucose concentration of the cell sap in potato cells

- An investigation of the glucose concentration of the cell sap in potato cells In this experiment I intend to investigate the effects of osmosis on potato cells. Specifically, I intend to use my knowledge of osmosis to investigate the glucose concentration of the cell sap in potato cells. Osmosis is a method by which water levels on either side of a semi permeable membrane may balance themselves. It occurs between regions of high water concentration and low water concentration. As it is a special method of diffusion exclusive to water, it also allows dilute and concentrated solutions to balance their strengths....   [tags: GCSE Biology Osmosis Coursework]

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The Molarity of Sugar Solution Inside Potato Cells

- The Molarity of Sugar Solution Inside Potato Cells Background Information Osmosis Osmosis is the passage of water from a region of high water concentration through a semi-permeable membrane to a region of low water concentration. Semi- permeable membranes are very thin materials which only allow certain things to pass through them. They will allow small molecules like Oxygen, water and Carbon Dioxide to pass through. Water molecules can pass across the cell membrane in both directions....   [tags: Papers]

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Baked Potato Restaurant Market Analysis

- 1. INTRODUCTION The Baked Potato Restaurant will be a moderately priced 75 seat fast-food restaurant located in the beautiful city of London, offering family style menu and other different baked potato menus. The Baked Potato Restaurant new to the London area and have diversification opportunities by offering new food products in the new market. A major challenge facing baked potato is how to attract new customers, increase profits and make better use of its resources during the initial stage. As a new restaurant we face competition from the giants in the fast food industry....   [tags: baked potato, fast food industry, restaurants ]

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Plant And Animal Cells

- Plant and Animal Cells I. Introduction All organisms in life are composed of at least one or more cells. Cells are the basic units of life. There are three main features of a cell. First, all organisms consist of one or more cells. Second, cells are the smallest units of life and third, cells arise only from preexisting cells. These three facts are referred to as the cell theory. All cells can be categorized into two basic cell types. They are prokaryotic and eukaryotic. To distinguish where cells are placed in the two categories, what is inside the cell must first be looked at....   [tags: Biology Biological Cells Essays]

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A Comparison of Eukaryotic and Prokaryotic Cells

- A Comparison of Eukaryotic and Prokaryotic Cells There are two main types of cells in the world. The simplest cells such as bacteria are known as Prokaryotic cells, and human cells are known as Eukaryotic cells. The main difference between each of these cells is that a eukaryotic cell has a nucleus and a membrane bound section in which the cell holds the main DNA which are building blocks of life. Prokaryotic cells do not have a nucleus. The chromosomes which are found in prokaryotes are usually spread in the cytoplasm....   [tags: Biology, Cells, Science]

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The Growth and Production of Cancer Cells

- Cancer cells exhibit the distinctive metabolisms contrary to the normal cells, not only energy production depending on aerobic glycolysis but the dysregulatedcell signaling and mechanism,the increasing of fatty acid synthesis and glutaminolysisare obviously observed.(Y Zhao et al. 2013)Simultaneously, intrinsic and extrinsic molecular mechanisms have been changed, in order to alter cellular metabolisms to meet the demand of nutrient in the rapid growth of cancer cells, commonly carbohydrate, protein, lipid and nucleic acid are the essential sources for which cancer cells need to support their growth and dividing....   [tags: cells, mechanism, protein, lipid]

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Analysis and Description of Photovoltaic Cells

- Photovoltaic cells are found everywhere today: your home, work buildings, schools, and more. There are two types of Photovoltaic Cells: Organic and Inorganic. The type of cell that are most often found and used are inorganic cells. Inorganic cells are known to produce much more energy than organic cells. Although the main element used in these inorganic cells is Silicon, there are many more elements that are used in inorganic photovoltaic cells. There is monocrystalline, polycrystalline, amorphous, and microcrystalline Si, the III-V compounds and alloys, CdTe, and the chalcopyrite compound, copper indium gallium diselenide (CIGS)....   [tags: inorganic cells, chalcopyrite compound]

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Different Types of Stem Cells

- Stem cells have the ability to grow and multiply into many different cells in the early life of the body. Stem cells help to replace dead and or damaged cells in the human body. These stem cells are found inside the body, inside our organs and tissues such as in our skin and liver. Each stem cell helps its organ or tissue such as if the liver is damaged, the liver stem cells would repair the liver. There are four main types of stem cells: adult, fetal and embryonic. Each of these stem cells acts in a different way and have their own nature....   [tags: biology, cells, organs, tissues]

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Functions of Plasmodesmata on Plant Cells

- Introduction Cells communicate by transferring molecules from one to another. When a molecule is transferred it creates a reaction which then causes an effect. Within multicellular organisms there is cell-to-cell communication. Direct communication between cells can occur in two ways. One way is cell-cell recognition via interaction between surface proteins. When there is contact between cell surfaces, the proteins on the surface of the cell interact and create a signal. The other way is through cell junctions between adjacent cells....   [tags: molecules, cells, plasma membrane]

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The Use of Hydrogen Fuel Cells

- As fossil fuels continue to be targeted for removal in the use as a source of power many talk about the use of hydrogen fuel cells as a replacement. The article discus this from two view points, Joan Ogden, a Professor of Environmental Science and Policy at the University of California, and Daniel Sperling , Professor of Civil and Environmental Engineering and Environmental Science and Policy, and Director of the Institute of Transportation Studies at the University of California, describe how many countries have begun projects in regards to hydrogen fuel cells and that car companies have announced commercialized versions in the near future....   [tags: Hydrogen Fuel Cells]

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The Irish Potato Famine and The Holocaust in Literature

- The Irish Potato Famine and The Holocaust in Literature Writers often use literature as a means of communicating traumatic events that occur in history, and such events are recorded by first-hand accounts as well as remembered by people far removed from the situation. Two traumatic events in history that are readily found in literature are The Irish Potato Famine and The Holocaust. A literary medium that has been used quite poignantly to convey trauma is poetry and the poetry from these two historical traumatic events is not difficult to find....   [tags: Literature Holocaust Potato Famine]

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Adult and Embryonic Stem Cells

- We must start at the basic, what are cells. Cells are the basic unit of living things. We all have trillions upon trillions of cells that make up our body. Our body has three main cell types which are: Ectoderm, Mesoderm, and Endoderm. Ectoderm cells are in the skin, hair, eyelids and nerves cells for bones, Mesoderm cells are in muscles, tendons blood vessels and kidney construct the linings of two tubes within the body and Endoderm cells are in digestive tubes and respiratory tube. There are also stem cells.” Stem cells are unspecialized cells that have two defining properties: the ability to differentiate into other cells and the ability to self-regenerate.” (Kochar)There are different ty...   [tags: cells, stem cell, adult, embryo]

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Mullelr and Glial Cells

- ... It was hypothesized that the endfoot has the biggest impact on the flow of ions across the membrane, and therefore the cell’s resistance and conductance. So, the resistance of the cell was once again measured, but this time with the endfoot removed from the cell. It was expected that if the endfoot of the Muller cell was the region that had the biggest impact on resistance, with the endfoot removed the resistance of the cell would increase. Scientists also decided to cut a part of the cell above the endfoot, without removing the endfoot....   [tags: Brain, Endfoot, Cells]

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Investigating the Effects of Different Concentrations of Sucrose Solution on Potato Cells

- Investigating the Effects of Different Concentrations of Sucrose Solution on Potato Cells Aim: to investigate the different effects of various concentrations of sucrose solution on potato cells. Introduction: Osmosis is a special type of diffusion. Osmosis happens when two solutions of different concentrations are separated by a selectively permeable membrane. A selectively permeable membrane has holes in it which are just big enough for water molecules to pass through, but not the much larger sugar molecules....   [tags: Papers]

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Finding the Relationship Between Turgidity of Potato Cells and the Concentration of the Surrounding Medium

- Finding the Relationship Between Turgidity of Potato Cells and the Concentration of the Surrounding Medium Planning Aim: To find the relationship between turgidity of potato cells and the concentration of the surrounding medium. Prediction: I predict that when the potato chip is put into the solutions, water will pass from the weaker solution into the stronger solution. For example, when a potato chip is put into distilled water, the water will pass from the distilled water into the potato cells, making it more turgid because the cells now have more water in them....   [tags: Papers]

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An Investigation on How Different Levels of Sugar Concentration Can Affect Potato Cells

- An Investigation on How Different Levels of Sugar Concentration Can Affect Potato Cells AIM: My aim for this experiment is to see the results of potato tissue's mass difference, when placed in different concentrations of sugar solutions. Also my aim for this experiment is to estimate the concentration of cell sap within the potato cells. Variables involved: For this experiment I would expect to have 3 different variables, Independent, Dependent, and fixed variables, which all help me to plan and explain the experiment thoroughly....   [tags: Papers]

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Stem Cells: Are Stems Cells able to Generate Cartilage and Bone?

- A stem cell being able to make cartilage and bone seems like a preposterous idea, does it not. With the invention of the microscope in the 1800’s, it was not long before scientists were able to discern that some cells were able to generate and change into other cells. This was the beginning of stem cell research. In 1961, Dr.’s Till and McCullough were studying the effects of radiation on the bone marrow of mice, when they discovered the existence of multipotent stem cells. In 1998, James Thomson at the University of Wisconsin-Madison isolated human embryonic stem cells, then demonstrated how they specialize and rejuvenate....   [tags: human embryo, stem cells]

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The effect of osmosis in potato cells with different concentrations of sucrose solution

- The effect of osmosis in potato cells with different concentrations of sucrose solution Aim: To test the effect of different concentrations of sucrose solution to osmosis in a potato cells by putting potato pieces in test tubes of water containing different concentrations of sucrose solution. Scientific Theory: Osmosis is defined as the movement of water molecules across a partially permeable membrane from a region of high water concentration to a region of low water concentration. In a high concentration of water the amount of solute (e.g....   [tags: GCSE Biology Osmosis Coursework]

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Investigation to Determine the Effect of a Range of Different Concentrations of Sugar Solutions on the Potato Cells

- Investigation to Determine the Effect of a Range of Different Concentrations of Sugar Solutions on the Potato Cells Aim My aim is to set up an investigation to determine the effect of a range of different concentrations of sugar solutions on potato cells. I predict that the higher the concentration the more the length and mass of the potato chip will decrease. The lower the concentration the more the length and mass of the potato chip will increase. This should happen due to the law of osmosis....   [tags: Papers]

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Controversy in the Use of Embryonic Stem Cells

- “How can the use of stem cells be so controversial?”, one may ask. If the stem cells are donated out of free will or were going to be destroyed anyway, how can putting them to better use be controversial. Sure, a potential life must be destroyed to save a life, but only before one can tell that it is a human. Should the use of stem cells for medical research and use be regulated. These questions and more will be discussed and pondered throughout this paper. A stem cell is defined as a cell that can change into a different type of cell....   [tags: miracle cells, genetic research]

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Investigating the Effect of Sugar Solution on the Weight and Size of Potato Cells

- Investigating the Effect of Sugar Solution on the Weight and Size of Potato Cells Aim: To investigate whether the different concentration of sugar solution will affect the weight and size of the potato cells. General background information: Osmosis is defined as the movement of water or any other solution's molecules from an area in which they are highly concentrated to a region in which they are less concentrated. This movement must take place across a partially permeable membrane such as a cell wall, which lets smaller molecules (E.g....   [tags: Papers]

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The Effect of Different Strength of Salt Solutions on Potato Cells Through Osmosis

- The Effect of Different Strength of Salt Solutions on Potato Cells Through Osmosis An Investigation to find out how different strengths of salt solution affect potato cells through osmosis. Aim I aim to investigate the effect of different concentrations of salt solution on potato cells when osmosis occurs. Introduction I intent to set up this experiment using equally sized cylinders of potato submerged in salt solutions of different concentrations. I will then observe the percentage change in mass over a set period of time....   [tags: Papers]

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Impacts on Humans and Environmental Factors Associating with the Irish Potato Famine

- This project examines the impacts on humans and environmental factors associating with the Irish Potato Famine between the years of 1845 and 1852. This famine was named so due to Irish’s main staple food being potatoes and the affect of those potatoes on that country once they were unable to be grown. Also known as the Great Famine, which occurred in Ireland, this famine created a mass occasion of starvation, emigration, and disease. This event in history caused many changes throughout the world....   [tags: potato famine, great famine, irish farmers]

Term Papers
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How the Concentration of the Substrate Affects the Reaction in the Catalase Inside Potato Cells

- How the Concentration of the Substrate Affects the Reaction in the Catalase Inside Potato Cells Introduction Enzymes are made of proteins and they speed up reactions, this means that they act as catalysts. Hydrogen peroxide is a byproduct of our cell's activities and is very toxic. The enzymes in our bodies break down the hydrogen peroxide at certain temperatures they work best at body temperature, which is approximately 37 degrees. At high temperatures, the cells begin to denature....   [tags: Papers]

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Life History Parameters of the Cigarette Beetle (Lasioderma Serricorne) on Root and Tuber Chips

- INTRODUCTION Cigarette beetle, Lasioderma serricorne F (Col.: Anobiidae) is a cosmopolitan stored product insect pest (Rees, 2004). The female beetles are found to deposit about 100 eggs loosely on commodities which hatch between 6- 10 days in territory weather conditions (Cabrera, 2007). The beetles that emerge as adult are capable of flight and do not feed as adult but create holes in the product to locate a suitable oviposition site (Papadopoulou, 2006). The shortest development period from egg to adult stage is 26 days at 30°C and 70 % relative humidity (Rees, 2004) (in what product?) The cigarette beetle is one of the most common household insect that causes damage to stored products s...   [tags: store product insect pests]

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Use of Cells as Replacement Tissues and Organs

- Cultured cell from animal tissue can be used to replace dysfunctional and dead tissues and organs. In our daily lives, our cells are damaged and some of the damaged cells are repaired, but others are destroyed. The destroyed cells are forced into dysfunctional state where it can no longer be divide and undergo apoptosis (Sens Research Foundation, 2014). Some of the lost cells can be replaced by tissue-specific stem cell but due to aging process, the stem cell becomes less effective, losing cells progressively and they are increasingly become malfunctioning....   [tags: cultured cells from animal tissue]

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Stem Cell Research: The Benefits of Stem Cells

- ... They are less mature than adult stem cells but more mature than embryonic stem cells (Freedman 10). There is a lot of research being done about stem cells today. Scientists try to figure out what tissues can be made from stem cells and how to reproduce the cells best. A lot of this research is done in vitro (out of the body) in labs. Learning how stem cells change into different cells can give us the ability to stimulate stem cells in labs to form tissue. It could lead us to being able to change stem cells in the body to specific cells (Freedman 12)....   [tags: disorder, cells, change, osteoblast]

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Stem Cell Research : Stem Cells

- Stem cell research has been around for many years. What are stem cells. They are the base cells of our bodies. Cells that make up our organs and tissues are the cells that come from stem cells after fertilization. Stem cells have the ability to replace cells that are lost and can repair injured tissues. They are made up of two characteristics which are their capacity to self-renew and differentiate. Self-new is when they the cell divide and create more stem cells. Differentiate is when the stem cells turn in more specialized cells that make up our tissues and organs....   [tags: Stem cell, Cellular differentiation, Stem cells]

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The Potato Virus

- ... Elements in the 5’- and 3’- nontranslated region (NTR) are highlighted. These elements are important for replication, translation and cell-to-cell movement. B) Gray elements are complementary sequence elements. The three subgenomic RNAs (sgRNAs) that are produced by PVX are shown. C) Schematic view of long distance interactions required between the 5’-NTR and subgenomic promotors for sgRNA synthesis. Adapted from J. Verchot-Lubicz et al. (2007) [9] Virus infection cycle Host cell entry and virion disassembly Plant cells can be infected by PVX virions due to mechanical inoculation [10]....   [tags: infection cycle, classification, ]

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Solar Spectrum in the Electromegnetic Spectrum: Solar Cells

- Nearly all energy in one form or another can be traced back to solar energy, and it is harness in many different ways. Solar cells are the most direct way to convert incident solar radiation into electricity, this process is also known as photovoltaics. Solar cells produce no pollution, noise, and do not contain any moving parts, allowing them to be tough, reliable, and long lasting. The natural light that we enjoy from the sun and see every day is only a fraction of the total energy emitted by the sun incident on the earth....   [tags: solar, energy, cells, electricty]

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Stem Cells: To Live Another Tomorrow

- Dr. Dan Kaufman, Ph. D. an associate professor University of Minnesota Stem Cell Institute, has said that, “human embryonic stem-cell research is not only ethical, it is an essential field to pursue to make key advances in biomedical research to treat diseases effectively where there are currently no cures… (thesurvivaldoctor.com).” I believe that stem cell research needs to receive government funding and research should expand in order to completely understand what diseases can be cured through stem cells, and if the benefits outweigh the risks involved....   [tags: Embryonic Stem-Cell Research, Human Cells]

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Stem Cells

- Content 1. Introduction 2. The unique properties of stem cells and the ways of reception. 3. The application of stem cells in curing the worldwide diseases. i. The effectiveness of using stem cells in diabetes treatment and possible risks of this therapy. ii. What are the benefits and risks of using stem cells in curing cardiac disorders, such as ischemic disease and stroke. iii. How neural disorders, such as Parkinson’s, Alzheimer’s and spinal cord injuries can be treated by stem cells and what are the fears about application of this therapy on human....   [tags: Ethical Issues, Embryonic Stem Cells]

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The Ongoing Debate Over the Use of Stem Cells

- In the past two decades, many technological and scientific advances have been made in order to make life easier for many people who suffer from cancer, disease and sickness. Among these advances there is something revolutionary called stem cells. Stem cells can help restore and regenerate almost all parts of the human body such as the heart, kidney, liver, and many other organs. Although stem cells offer a lot, there are many views against and for stem cells, and among these views lies the debate of whether stem cells should be legalized or not (NIH 2)....   [tags: Stem Cells, argumentative, persuasive, medicine]

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Stem Cells Research: Revolutionizing the Medical Field

- “Now science has presented us with a hope called stem research, which may provide our scientists with many answers that have for so long been beyond our grasp.” The words of former first lady Nancy Reagan unerringly illustrate the potential of stem cell research throughout the world. Throughout the existence of the human race, we have constantly uncovered the unknown. Learning everything there is to know about ourselves has led to a huge library of useful knowledge that continues to grow. By analyzing the human body, we have been able cure many injuries and illnesses, but not all of them....   [tags: science, organs, tissue, embryonic cells]

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Stem Cells and its Debate on Ethical Issues

- Stem cells research has been a very disputed topic among the US. There has been ethical issues concerning stem cell research and has caused friction in its track to its full potential. These ethical issues include the concern of moral status of embryos, in which stem cells are made of and the doomed embryos ands. Religion plays a huge role in the stem cell debate concerning issues with their religion. Several scientist that have been researching stem cells have agreed that stem cells have great potential to cure several harmful diseases like diabetes as well as cancer.Stem cell research should have an increase in its budget and less restricted to further help the research of potential cures...   [tags: human embryonic, stem cells, embryos]

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The Potato Famine in Ireland

- In the mid-1800s Ireland heavily relied on the growth of the potato. The phytophthora infestans spread Ireland quickly infecting all of the potato crops. This paper will cover the many different parts of the potato famine. The potato, The person invented the potato, how much Irish people relied on the potato and many other interesting things, as well as the development of the potato. One of the main reasons of that caused the potato famine was that many people slept in one cabin sharing it with many f animals and sleeping on straw beds that are on the ground....   [tags: Ireland, phytophthora infestans]

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How Do Atoms Bond to Compose Cells?

- For atoms, bonding is crucial. However, different atoms bond in different ways. Making up a bond known as chemical bonding. There are two main ways that atoms can bond to each other to make larger molecules, covalent bonds and ionic bonds. We also learned about biological molecules such as, carbohydrates, lipids, proteins, and nucleic acids. Lastly, we learned about prokaryotic and eukaryotic cells. The activities that relate to this unit are Iconic vs. Covalent bonds, Bonding basics, Prokaryotic and Eukaryotic cells, Biological molecules, and Biochemical reactions....   [tags: bonding, covalent, ionic, cells, atoms]

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Water Potential Of A Potato Tissue

- Introduction Aims of experiment Conduct one experiment to determine the water potential of a potato tissue. Conduct another experiment to determine the osmotic potential of an onion cell. Water in plants Water plays a critical role in plants as it makes up 85% to 95% of the plants’ weight and 5% to 10% of the seeds’ weight which makes it the most abundant complex in plant cells(1995). Water is also involved in organic compounds synthesis, support the plant(95). Reactions occur in water, and solvents move in the water(95)....   [tags: Cell wall, Osmosis, Cell, Plant cell]

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Is Embryonic Stem Cells Research? Morally Wrong?

- In the first ten days after conception, several hundred stem cells already multiplied and a baby will be formed. These tiny stem cells produced osteocystes, cardiac muscle cells, and neurons. They are the building block for all 260 types of cells in our bodies. Even through adulthood, stem cells are produced by our bodies to replace old cells. However, we do not produce enough stem cells to heal a spinal cord injury or fight cancerous cells. Through research, scientist can manipulate embryonic stem cells that would treat autoimmune diseases, heart diseases, spinal cord injuries, and much more....   [tags: Stem cell, Embryonic stem cell, Stem cells]

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Potato Famine of 1845

- ... It is thought that over half of a million people die in 1847, compared to the million that died from 1845-1848 (Kinealy, 92). Many of the Irish chose to become potato farmers, due to the fact that it could be grown on such cheap land. When the famine hit, thousands soon found themselves out of work. Many could not pay their rent, and were evicted. Some landlords tried their best to help their tenants and not charge them for rent, but soon they needed a source of income as well (Scally, 117)....   [tags: ireland, starvation, food crisis]

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A Scientific Explanation of Stem Cells and Stem Cell Research

- In general, a cell can be defined as a stem cell if two basic criteria are met. First, stem cell is capable of self renewal for indefinite period throughout life while maintaining undifferentiated state, i.e., the cell can divide and produce two identical daughter cells and thereby maintains the stem cell pool. Second, stem cell possesses capacity for differentiate into specialised and functional progeny under the right conditions, or given the right signals. It may divide asymmetrically to yield an identical cell and a daughter cell that acquires a particular cell type’s properties, such as morphology, phenotype and functional physiology that classified it belongs to a particular tissue (Bu...   [tags: Science, Stem Cells, Stem Cell Research, ]

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Osmosis in a Potato

- Osmosis in a Potato My main aim in this experiment is to find out if osmosis occurs in a potato, and how it affects the potato in different molar solutions of sugar and water. Factors * Type of cell * Different solutions * Concentration of solution * Time cells are in solution * Mass of cells * Surface area of cells * Temperature of solution Prediction Osmosis is the passage of water molecules from a weaker solution into a stronger solution, through a partially permeable membrane....   [tags: Papers]

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Role in Inducing and Maintaining the Pluripotency of Mice Embryonic Stem Cells

- Several members of the zinc finger family of proteins are key components in the transcriptional network maintaining pluripotency in embryonic stem cells. The mouse zinc finger protein 322a (Zfp322a) is expressed in embryonic stem cells and the ICM. Thus Ma et al. 2014 hypothesized that Zfp322a functions as a transcription factor in mice. Ma et al. (2014) discovered that Zfp322a is an irreplaceable transcription factor which enhances the reprogramming ability of OKSM (Oct4,  Klf4, Sox2, and c-Myc) and can replace Sox2 in OKSM in the generation of induced pluripotent stem cells (iPSCs)....   [tags: zinc finger, mouse stem cells ]

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1342 words | (3.8 pages) | Preview

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