Osmosis lab - Russell Koh 12.6 T14! ! Aim! In this investigation you will be calculating the concentration of the cytoplasm in potato cells.! ! Variables:! Independent variable! Concentration of sugar solution(mol)! ! Dependent variable! The percentage change in mass of the potato after the experiment is over. (%grams)! ! Controlled variables! Surface area to volume ratio (SA:V ratio)! Temperature of the solution! Time allowed for osmosis to occur! ! Hypothesis! I predict that there will be a negative
rate of osmosis. The results, evidently supported the hypothesis by the changes in the potato cylinder mass due to the concentration of solutes. The increase in mass is due to the lower concentration salt present in the potato cylinder. The theory supporting this observation suggests that the potato cylinder was submerged in a hypotonic solution (lower solute concentration). As this sample was in distilled water, the solution can be said to be hypotonic relative to the potato cylinder. Osmosis occurred
Brookelyn Snider Biology Lab 261 The Effect of Diffusion and Osmosis on White Potato vs. Sweet Potato Introduction: The purpose of this experiment was to develop an understanding of water—solute balance. In this experiment, sweet potatoes and white potatoes were used as model systems. (Bio 261 Lab Manual) Diffusion is the movement of particles from an area of a higher concentration to one of a lower concentration. In this experiment this would be the movement of particles
OF WATER POTENTIAL OF POTATO STRIPS LABORATORY REPORT REPORT BY: - CHIN YI JING (024492), CHOONG XIN YUN (024423), LEE GAH NI (024320), RENAD SADIG (024598), and SAI SAMHARINI D/O VIGNESWARAN (024429) Introduction In order for the cells to be able to maintain their metabolic functions, various biological molecules need to pass into and out of the cell. This can be achieved by transport processes, which can be broadly classified into passive and active transport. Osmosis is a type of passive
The Effects of Concentration on Osmosis in Potatoes The aim of this experiment is to find out which molarity of salt solution creates an isotonic environment to prevent osmosis in potatoes. The water potential of a cell is determined by the solute potential and the pressure potential. Solute potential represents the concentration of a solution and given that adding solutes lowers water potential, this makes it less than zero, (negative). The pressure potential refers to the pressure being applied
This unfortunate result is due to the fact, that a the freshwater fish, has a selectively permeable membrane, that through the process of osmosis, would rapidly diffuse water into the hypertonic solution(sea water). Furthermore, the fish's cell membrane would be impermeable to the salt molecules, therefore the fish would not be able to obtain the necessary amount of fresh water; to restore
BIOFUELS Two problems roused the world’s concern in recent years. One is energy crisis caused by the squandering of petroleum fuel. Second problem is environmental problems such as greenhouse effect, global warming, etc. To deal with such problems, renewable sources, utilization technology and bioenergy production technology have been developed. Bioethanol as one of the biofuel can be blended in different proportions in automobiles with gasoline. Biobutanol is also a new biofuel (Liu, Wang, & Zhang