Question detail

Which option best explains lactic acid within Respiration?

Try the question, check the answer, then read the explanation to understand the curriculum point.

Show answer Topic hub Objective page

At a glance

MCQ

Type

practice

Style

Topic

Respiration

Question

A. (HT only) lactic acid is converted back into glucose in the liver.
B. Students often confuse the process of lactic acid being converted back into glucose with the process of glucose being broken down for energy.
C. (HT only) lactic acid is not converted back into glucose in the liver.
D. The idea only requires memorising the topic title for Respiration.

Answer

In this question, (HT only) lactic acid is converted back into glucose in the liver. is correct It stays aligned to the exact wording and meaning of the objective.

Explanation

In AQA-style practice, the correct answer must match the objective closely and use the science rather than filler wording. That is why (HT only) lactic acid is converted back into glucose in the liver. is the best option here. Linking the idea to a byproduct of anaerobic respiration in muscles, which can accumulate during intense exercise keeps the explanation specific.

Common mistake

Lactic Acid Conversion Confusion

Students often confuse the process of lactic acid being converted back into glucose with the process of glucose being broken down for energy.

Emphasize that lactic acid is converted back into glucose in the liver after exercise, and clarify that this is a separate process from glycolysis, which breaks down glucose for energy.

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