Biology Coursework - How much sugar does a potato contain?
5 User(s) Rated!
5 User(s) Rated! Words: 1591 Views: 9 Comments: 0
Introduction When you submerge a plant cell in water, water flows through the cell wall and cell surface area into the vacuole from the outside. As a result, the cell swells up, but does not burst. This is because the cell wall stops the cell expanding too much. When this point is reached we say that the cell is fully turgid. This type of diffusion is called osmosis, and takes place through a partially permeable membrane. The water moves from a dilute solution to a concentrated solution. This stops when the levels of water in each solution are equal....
happened in our experiment.
happened in our experiment.
I have reached a conclusion that the amount of sugar in a potato is just over 10%, at about 12%. I reached this conclusion because I have drawn a line of best fit on my graph which contains the results from the experiment, and where the line reaches the x axes, that is the percentage of sugar in the potato.
Evaluation
To improve our experiment next time we could use a larger amount of potatoes. We could also use a broader range of sucrose solutions to make our results more accurate.
Aim The aim of the investigation is to see the effect light intensity has on the rate of photosynthesis. Background Information The rate of photosynthesis is affected by a number of factors including light intensity, temperature, water, carbon dioxide and availability of nutrients. If the conditions the...
Words: 1490 View(s): 3 Comment(s): 0
The American Cancer Society estimates that 18,300 Americans will be diagnosed with malignant brain, spinal cord and other nervous system tumors in 2003. Approximately 13,100 people in the United States will die from brain, spinal cord, and other nervous system tumors in 2003. Brain and spinal cord tumors occur most...
Words: 1107 View(s): 37 Comment(s): 0
Background Information Ø There are three main types of Enzymes. These are Carbohydrases, Protease and Lipases. Ø Enzymes can be used over and over again. Ø If the temperature is too low the Substrate Starch has less thermal energy which means that there will be...
Words: 882 View(s): 7 Comment(s): 0
I have to plan and carry out an experiment to investigate the way in which concentration of a substrate affects the rate of an enzyme-catalysed reaction. I will need to carry out some background information to find out what may affect my experiment. Background Information: An...
Words: 2072 View(s): 6 Comment(s): 0
Let"s get straight to the heart of the matter--the heart"s job is to move blood. Day and night, the muscles of your heart contract and relax to pump blood throughout your body. When blood returns to the heart, it follows a complicated pathway. If you were in the bloodstream,...
Words: 1143 View(s): 42 Comment(s): 0






