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Biology-Respiration-Rate of Yeast Respiration

Aim:
An investigation to find out how temperature affects the rate of yeast respiration.

Variables:
Fixed variables:
Through out the investigation I will keep the amount of yeast/glucose solution the same (50 ml). Also the amount of time I will run the experiment for at each reading will remain constant at 1 minute. The one other thing I will keep the same is the concentration of the Glucose as we are not investigating the affect of glucose concentration on the rate of yeast respiration.
Independent variables:
1. temperature
2. concentration of glucose
3. amount of yeast
4. type of yeast
5. oxygen level
Dependent variable:
I will record the level of the water in the burette Everytime I change the temperature of the water one minute after doing so.

Prediction:
As the temperature increases the rate of yeast respiration will increase then it will descend.

Keywords:

Respiration-
Cell reaction.......

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Approximate Word Count: 2285
Approximate Pages: 10 (250 words per double-spaced page)

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