A Comparison of the Water Potential of Potato and Sweet Potato Tubers Aim The aim of this experiment is to compare the water potential of two different plant tissues, potato and sweet potato tubers, by measuring the gain or loss of water when samples of the tissue are placed in a range of concentrations of sucrose solutions. Background information Osmosis is the movement of water molecules from a region of their higher concentration to a region of their lower concentration through
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
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
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. I predict this
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
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
Table 1 shows the mass of young, old and freeze-damaged potato tubers before and after being incubated in sucrose solutions of different concentrations for 45 minutes. For young potato tubers, the mass increased after being incubated in solutions with concentrations of 0.15M, 0.20M and 0.25M, while the mass decreased after being incubated in solutions with concentrations of 0.30M, 0.35M and 0.50M. For old potato tubers, the mass increased after being incubated in solutions with concentrations of
Experiment to Investigate Osmosis in Potatoes The aim of this experiment is to investigate the movement of water in and out of plant cells. The cells chosen for study will be taken from potato tubers. Firstly I will explain what osmosis is. 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. This definition contains three important statements: a) It is the passage of water through a semi permeable
linked is best described as a rhizome. The first step in comparing hypertext to a rhizome system is to understand just what a rhizome is. The philosopher Gilles Deleuze came up with the idea and Janet Murray applied to hypertext. A rhizome is a tuber root system in which any point may be connected to another point. “Deleuze used the rhizome root system as a model of connectivity in systems of ideas” (Murray 132). One simplified example of this is the prewriting technique of making a web. There
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
complicated history than Idaho’s Potato Museum or the Irish Potato Famine. The Incas first cultivated potatoes around 8,000 to 5,000 B.C.--they held the sole key to the thousands of cultivars of potatoes until Spanish Conquistadors invaded Peru in 1536, claimed ownership of the potato, and dispersed them all over Europe in a prolific monoculture. This perennial tuber, Solanum tuberosum, now takes
How The Potato Influenced China and Ireland. Many people eating boiled potatoes believe that they are just eating a tasteless, starchy vegetable. The potato is a While that may be true, the potato also had a huge influence on the diet and standard of living in many different countries because of its beneficial characteristics. For example, the potato is nutritious easy to grow, and cheap. Due to these benefits, the potato was had a very influential role during the columbian exchange and changed
The Tuber that Unites a Hungry World Potatoes are a truly globalized crop. They can be found all around the world from the Americas to China, from Africa to Europe. In each of these places, they play their own unique role but the secret to their success is their hardy nature and their nutritional value. They become valuable to some peoples because they are able to grow in geographical locations or in weather situations that would cause other crops to fail. They are also incredibly nutritious, providing
Potato (Solanum tuberosum L.) belongs to family Solanaceae and is one of the most important vegetable cum starch supplying crop having high production per unit area per unit time. Potato, an underground tuber occupies prime position among the cash crops in India. Potatoes are rich source of vitamins, especially C and B and also minerals. Tubers contain 70-80% water, 20.6% carbohydrate, 2.1% protein, 0.3% fat, 1.1% crude fibre and 0.9% ash (Banu et al., 2007). It also contains good amount of essential
tobacco were some of the crops introduced to the Old World. Coffee, oranges, bananas and sugar cane were introduced to the Americas. One of the most important crops brought to the Old World was the potato. Potatoes, as a substitute for wheat or rice, provided peasants a new source of calories. Potato was originated South America and then introduced to the Old World; the crop also raised political, economic and social consequences, such as late blight, Irish Famine, and sudden population increase
History of Potato Potato is one of the most nutritious and commonly edible foods in our society today. But there is a fascinating story of how Potato came to be widely consumed today around the world today. Potato also known as Solanum Tuberosum for its scientific identification was a wild plant. It was first domesticated in 10,000 BCE around the Lake Titicaca basin in the Andes region by the farmers. This region was not the best for agriculture because of the terrain but Potato rose to the occasion
Student ID: 23137443 The Human Desire of Control Michael Pollan uses the potato to address the idea of control, in particular, whether we have control over nature or it has control over us. Potatoes were first found in South America growing in the Andes. The ancestors of the Incas lived in that area and were the first known humans to cultivate these potatoes for human consumption (Pollan 131). When settlers came to the New World they marveled at these new crops that grew from spuds and shipped them
What is so extraordinary about a potato? Potatoes became a beneficial source of nutrients around the world. Potatoes originated in South America and were given to the European travelers who took them back to their lands and began to plant them. From the beginning of the first migration which dates back to 8,000 BCE, there have been potatoes. I chose to do potatoes as a topic because I like eating potatoes and wanted to know a little more about them. I never expected to find out so much information
brought the potato to Ireland to see if it would survive. Another belief is that the potato came to Ireland when some potatos washed ashore from a Spanish Armada ship that had sunk off the coast of Ireland. The white potato is thought to have originated in the Andean Mountains. The Spanish discovered it in northern Peru and brought it back to Europe. It was first considered poisonous by the Europeans because it was classified in the same family as the poisonous nightshade. Potatos became popular
The Great Potato Famine occurred in Ireland beginning in the mid 1840’s to the late 1840’s and early 1850’s. This outbreak was caused by a fungus called Phytophthora Infestans. At the time of this outbreak occurred the potato was a staple in the diet of one-third of the Irish population. This outbreak caused many Irish citizens to immigrate to places like the United States of America. But among those that were not able to leave Ireland were the farmers and the other Irish citizens that could