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Prokaryotes and eukaryotes
Different between eukaryotic and prokaryotes
Different between eukaryotic and prokaryotes
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A prokaryote is a basic unicellular cell typically chracterized by having no defined nucleus. Examples of prokaryotes are typically given as orgamins that belong to the Bacteria and Archaea domains (Campbell 13). Furthermore, prokaryotes are very similar to eukaryotes except for the fact that they don't have a nucleous but a nucleoid and that prokaryotes are smaller than eukaryotes (Campbell 98). By the definition of a prokaryote and process of elimination it is easy to find the correct answer which is D.
A)Is incorrect because all cells require ribosomes (Module 14, slide 4) . Ribosomes are important since they make proteins which are part of the basic building blocks of life (Campbell 102).
B) The plasma membrane on the outside of the cell is required since it separates the innards from the ouside (Module 14, slide 4). They are can perform this fuction since they are made of a lipid bilayer with hydophilic and hydrophobic parts to keep the inside of the cell prrotected from the outside environment (Campbell 99).
C) The photo of prokaryotes on slide 6 of module 14 shows that it ...
There are many different cells that do many different things. But all of these cells fall into two categories: prokaryotic and eukaryotic cells. Eukaryotic cells contain a nucleus and are larger in size than prokaryotic cells. Prokaryotic cells do not contain a nucleus, are smaller and simpler than eukaryotic cells. Two of their similarities are they both have DNA as their genetic material and are covered by a cell membrane.
Cell Membrane-Sonar. Sonar on a submarine is the cell membrane in the cell. The cell membrane completely surrounds the cell protecting it’s contents from the surrounding environment.The cell way is a bilayer like sandwich with hydrophilic phosphates on either end surrounding a layer of lipids. Through diffusion and or active transport material comes in and out of the cell. Inside of the membrane pieces of the cell can move around and and change their position relative to the entire cell. On a s...
Bacteria play a large role in our health, the environment, and most aspects of life. They can be used in beneficial ways, such as decomposing wastes, enhancing fertilizer for crops, and breaking down of substances that our bodies cannot. However, many bacteria can also be very harmful by causing disease. Understanding how to identify bacteria has numerous applications and is incredibly important for anyone planning to enter the medical field or begin a career in research. Having the background knowledge of identifying an unknown bacteria may one day aid healthcare professionals diagnose their patient with a particular bacterial infection or help researchers determine various clinical, agricultural, and numerous other uses for bacteria.
Homeostasis is essential to the cell’s survival. The cell membrane is responsible for homeostasis. The membrane has a selective permeability which means what moves in and out of the cell is regulated. Amino acids, sugars, oxygen, sodium, and potassium are examples of substances that enter the cell. Waste products and carbon dioxide are removed from the cell.
In conclusion, despite Archaea’s close relationship to both bacteria and eukaryotes there is sufficient evidence for this group of organisms to be classified as its own domain, due to its unique characteristics in structure and extremophilic nature.
a. This is due to the properties of all matter and energy was needed for life to arise , so we originated .
The ribosomes are like the chefs of the restaurant because the chefs produce food for the patrons of the restaurant in the same way that the ribosomes link amino acids to form proteins in the cell. The Endoplasmic Reticulum is like the kitchen in the restaurant because the kitchen is where food is produced and cooked in the same way that the endoplasmic reticulum helps in the cell. The mitochondria/chloroplast is like the stove and oven in the restaurant because the stove and oven produced the energy for the food to cook and bake in the same way that the mitochondria supplies energy for the cell to use. The cytoplasm is like the dining room of the restaurant because the dining room allows the customers and other staff to move around and have space to sit in the same way that the cytoplasm allows molecules to move around the cell. The golgi apparatus is like the waiters of the restaurant because the waiters put in the order for a dish,receive it, and then carry it out from the kitchen to deliver to the customer in the same way that the golgi apparatus
: : : : : : : : : Oxford University Press, p. 366. Kent, M., 2013. "The Species of the World." Prokaryotes. In: Advanced Biology.. s.l. : : : : : : : : : Oxford University Press, p. 466.
Bacterial cells, like plant cells, are surrounded by a cell wall. However, bacterial cell walls are made up of polysaccharide chains linked to amino acids, while plant cell walls are made up of cellulose, which contains no amino acids. Many bacteria secrete a slimy capsule around the outside of the cell wall. The capsule provides additional protection for the cell. Many of the bacteria that cause diseases in animals are surrounded by a capsule. The capsule prevents the white blood cells and antibodies from destroying the invading bacterium. Inside the capsule and the cell wall is the cell membrane. In aerobic bacteria, the reactions of cellular respiration take place on fingerlike infoldings of the cell membrane. Ribosomes are scattered throughout the cytoplasm, and the DNA is generally found in the center of the cell. Many bacilli and spirilla have flagella, which are used for locomotion in water. A few types of bacteria that lack flagella move by gliding on a surface. However, the mechanism of this gliding motion is unknown. Most bacteria are aerobic, they require free oxygen to carry on cellular respiration. Some bacteria, called facultatibe anaerobes can live in either the presence or absence of free oxygen. They obtain energy either by aerobic respiration when oxygen is present or by fermentation when oxygen is absent. Still other bacteria cannot live in the presence of oxygen. These are called obligate anaerobes. Such bacteria obtain energy only fermentation. Through fermentation, different groups of bacteria produce a wide variety of organic compounds. Besides ethyl alcohol and lactic acid, bacterial fermentation can produce acetic acid, acetone, butyl alcohol, glycol, butyric acid, propionic acid, and methane, the main component of natural gas. Most bacteria are heterotrophic bacteria are either saprophytes or parasites. Saprophytes feed on the remains of dead plants and animals, and ordinarily do not cause disease. They release digestive enzymes onto the organic matter. The enzymes breakdown the large food molecules into smaller molecules, which are absorbed by the bacterial cells. Parasites live on or in living organisms, and may cause disease. A few types of bacteria are Autotrophic, they can synthesize the organic nutrients they require from inorganic substances. Autotrophic bacteria are either photosynthetic or Chemosynthetic. The photosynthetic bacteria contain chlorophyll that are different from the plant chlorophyll. In bacterial photosynthesis, hydrogen is obtained by the splitting of compounds other than water.
One of the major pieces of evidence, is that both mitochondria and plastids use a process similar to binary fission to replicate on their own time, independent of their host cells. Binary fission is the process by which cells split to produce an identical copy of the original cells. Binary fission is an example of asexual reproduction (reproduction performed by a single organism). The performing of binary fission is not found in eukaryote cells. Since prokaryote cells reproduce asexually using binary fission, it seems feasible that the mitochondria and chloroplast were at one-time prokaryote cells. A second distinct piece of evidence that supports the endosymiotic theory is that both mitochondria and chloroplast have many morphological (structure) features similar to those of prokaryotes. For one, both mitochondria and chloroplast contain two outer membranes. The inner resembles that of a prokaryote while outer membrane resembles that of a eukaryotic cell. A second structural feature the endomsymbionts share with prokaryote cells is that they contain circular chromosomes rather then the linear chromosomes found in eukaryotes. A third structural feature that prokaryotes have in common with mitochondria and plastids is the similarity of their ribosomes (structures capable of performing protein production). The ribosomes in prokaryotes, mitochondria, and chloroplast are more similar in size to one another, then the
Prokaryotic Cells All living things are made of cells, and cells are the smallest units that can be alive. Life on Earth is classified into five kingdoms, and they each have their own characteristic kind of cell. However the biggest division is between the cells of the prokaryote kingdom (monera, the bacteria) and those of the other four kingdoms (animals, plants, fungi and protoctista), which are all eukaryotic cells. Prokaryotic cells are smaller and simpler than eukaryotic cells, and do not have a nucleus. Prokaryotic means 'pre-nucleus' and eukaryotic means 'true nucleus'.
Every cell, either prokaryotic or eukaryotic all contain basic cell parts. They are: a plasma membrane, cytoplasm, DNA (the genetic material), and ribosomes. Prokaryotic cells have a simple structure and they are usually smaller than eukaryotic cells. Also, most prokaryotic cells contain a cell wall. In addition to having the basic cell parts, eukaryotic cells also contain a membrane-bounded nucleus and cell organelles.
Prokaryotic cells do not have a nucleus. The chromosomes which are found in prokaryotes are usually spread in the cytoplasm. In eukaryotic cells the chromosomes remain together inside the nucleus and there is a clear nuclear membrane that is surrounding the nucleus.
Choice D. This answer is correct. Each of the three stages of protein synthesis explained above require large amounts of energy, there is no answer choice that does not require energy. Initiation, elongation and termination all require GTP molecules as a source of energy in the
Knowledge is power when discussing the classes you have taken in college and how it affects your everyday life. Microbiology is one of those important classes where although for a majority of majors you do not have to take it and therefore will not learn the information discussed in it, other majors such as biology and nursing require you to take it. They will require you to take it because you will encounter some of the information being taught in it in the work field. As a nurse practitioner I have worked in the field with many patients who were diagnosed with Leprosy, Escherichia coli, Salmonella and other bacterial diseases. All of these diseases that I have encountered in patients were ones I was familiar with due to learning about them as a student in microbiology at CSUB. My children plan on