Apentix/AP Biology/Unit 3: Cellular Energetics/Question
AP Biologymediummcq1 pt

Which sequence correctly orders aerobic respiration?

A.Glycolysis → pyruvate oxidation → Krebs cycle → oxidative phosphorylation
B.Krebs cycle → glycolysis → oxidative phosphorylation
C.Oxidative phosphorylation → glycolysis → Krebs cycle
D.Glycolysis → oxidative phosphorylation → Krebs cycle

Explanation

Core Concept

Glucose is split in the cytosol; pyruvate becomes acetyl-CoA in the matrix; the Krebs cycle harvests electrons; the ETC turns them into ATP with oxygen.

Correct Answer

AGlycolysis → pyruvate oxidation → Krebs cycle → oxidative phosphorylation

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