At student investigated the effect of temperature on respiration in yeast over 1 hour. They used three different temperatures on the yeast species Saccharomyces cerevisiae.
They collected data and drew a graph of their results shown in Fig. 1.
Fig. 1
State the temperature at which Saccharomyces cerevisiae carried out most respiration.
[1]
State the volume of CO2 produced at 30 minutes when Saccharomyces cerevisiae was kept at 25°C.
[1]
State the total volume of CO2 produced by Saccharomyces cerevisiae at 30°C.
[1]
A student wrote the following conclusion for the data shown in Fig. 1:
As temperature increases the rate of respiration increases.
Using data from Fig. 1, give evidence as to why the student is correct in their conclusion.
Yeast respire anaerobically.
With reference to oxygen, describe the difference between aerobic and anaerobic respiration.
State which type of respiration releases the greatest amount of energy.
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