4
lesson pretestMultiple Choice

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Question 4 • CMS 2026-2027 Biology CREDIT RECOVERY

ATP is produced during the process of cellular respiration. Which is the order of the steps of cellular respiration?

Answer
A
glycolysis right arrow Krebs cycle right arrow electron transport chain
B
electron transport chain right arrow Krebs cycle right arrow glycolysis
C
Krebs cycle right arrow Calvin cycle right arrow electron transport chain
D
Calvin cycle right arrow electron transport chain right arrow glycolysis

Explanation

Cellular respiration proceeds through glycolysis first, where glucose is split in the cytoplasm. The products then enter the Krebs cycle, followed by the electron transport chain, which produces most of the ATP. Therefore, the correct order is “glycolysis → Krebs cycle → electron transport chain.” The Calvin cycle belongs to photosynthesis, not cellular respiration.

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