Under which of the following conditions is the rate of lactate formation highest?
A - VCE - SSCE Biology - Question 18 - 2023 - Paper 1
Question 18
Under which of the following conditions is the rate of lactate formation highest?
A. 10 °C in the absence of oxygen
B. 20 °C in the absence of oxygen
C. 35 °C in the... show full transcript
Worked Solution & Example Answer:Under which of the following conditions is the rate of lactate formation highest?
A - VCE - SSCE Biology - Question 18 - 2023 - Paper 1
Step 1
A. 10 °C in the absence of oxygen
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Answer
At this temperature, the metabolic rate is low, and the absence of oxygen would lead to limited lactate production.
Step 2
B. 20 °C in the absence of oxygen
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Answer
Lactate formation may increase slightly compared to 10 °C, but still limited due to the lack of oxygen.
Step 3
C. 35 °C in the presence of oxygen
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This condition supports aerobic metabolism, which typically leads to a higher lactate production compared to lower temperatures, yet still relies on oxygen.
Step 4
D. 50 °C in the presence of oxygen
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Answer
While this temperature is ideal for metabolic reactions, the extreme heat can lead to denaturation of enzymes and reduced lactate formation.
