Free Tuber Essays and Papers

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

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

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 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

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

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

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

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

World nutsedge by its persistent linear brown spiklets that have closely appressed overlapping scales. This perennial plant is self-incompatible. The stem of yellow nutsedge is triangularand has a light green-yellow color. Rhizomes that terminate in tubers are the main means of reproduction, although it does produce viable seed. It is interesting to note that the name Linnaeus chose for this sedge, esculentus, means edible in latin (6). The two varieties of interest to us are Cyperus esculentus var

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

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. Apparatus ========= · 1 potato tuber · 1 cork borer · 1 ceramic tile · 1 scalpel · Paper towels · 6 boiling tubes · 1 marker pen · 0.1M, 0.3M, and 0.5M sucrose solution · Access to an electric balance · 1 funnel Method ====== The volume of each boiling

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

stored products such as dried materials of animal and vegetable origin, nuts, herbs, spices, grains and grain products etc. They usually feed heavily at the larval stage (Cabrera, 2007). The insects are also found to develop favourably on root and tuber crops such as cassava, yam, cocoyam and sweet potato mostly in the dried or processed state for storage (Adebayor, 2002). The insect usually infest and contaminates stored products with their cocoons and body parts when they die, thereby reducing the

Mashua Mashua (Tropaeolum tuberosum Ruiz & Pavón 1802), also known as isanu, cubio, añu, ysaño, or puel, is a tuber crop indigenous to the Andean highlands and is of economic value as a food and medicinal crop. This root crop ranks fourth in importance in the Andean region after potato, oca, and ulloco (NRC, 1989). Of the Andean tubers, mashua is one of the highest yielding, easiest to grow, and the most frost resistant. Mashua is cultivated in the Andes of Bolivia, Peru, Ecuador, Columbia

qualities of tropical root and tubers. In addition to starch and sugar, root crops also contain some non-starch polysaccharides; including celluloses, pectins and hemicelluloses, as well as other associated structural proteins and lignins, which are collectively referred as dietary fibre. The protein content and quality of tropical roots and tubers (Table 1.6) is

leading to reduction in its yield, (Wahid et al. 2007). However, potato cultivars that are heat tolerant show comparatively little decrease in yield as a result of the effects of high temperature, they do not also form secondary tubers and they have less number of tubers with physiological defects, Rykaczewska, (2015). High temperatures can have adverse effects on potato yields

my white spots. They are not on my face but I have them everywhere else on my body, ranging in their size and shape. These white spots are called hypomelanotic macules. Fortunately, my brain has developed now around my tubers and should not have issues with them anymore. The tubers in the back of my eyes show no sign of ever getting bigger than what they are right now. My kidneys also are healthy and show no signs of being any trouble, but I will continue to get checked on every year for the rest

found to be 49.23%, 76.92%, 84.61% for sample concentration 100µg/ml, 500µg/ml, 1000µg/ml respectively. In lipoxygenase inhibition assay the methanol extract of Gloriosa superba tuber showed closest percentage inhibition with that of the standard aspirin. The present study thus confirmed that methanol extract of root tubers of Gloriosa superba possessed good anti-inflammatory activity. At present the plant is on the way of extinction due to its misuse, over exploitation and unscientific collection

Solanum tuberosum is a low- growing, branching perennial plant with weak stems. It is an herbaceous annual plant that grows up to 1metre produces a tuber which is commonly known as potato. Potatoes contains high carbohydrates and many different proteins, minerals especially calcium and potassium and vitamins particularly vitamin C. Potatoes are ranked fourth after maize, wheat and rice in terms of both area cultivated and total production. It is one of the world’s most important non cereals crops