Question

5 — atp and the digestive process
learning objective: determine the role of atp in converting food into energy.
which of the following is an example of anaerobic respiration?

a.) oxidative phosphorylation in mitochondria
b.) lactic acid fermentation in muscle cells
c.) citric acid cycle in mitochondria
d.) electron transport chain in chloroplasts

Explanation:

• Anaerobic respiration occurs without oxygen.
• Option a (oxidative phosphorylation), c (citric acid cycle) are part of aerobic respiration (need oxygen, occur in mitochondria).
• Option d (electron transport chain in chloroplasts) is related to photosynthesis, not respiration.
• Lactic acid fermentation in muscle cells happens when oxygen is low, so it’s anaerobic respiration.

Answer:

b.) Lactic acid fermentation in muscle cells