Question

Different steps in cellular respiration occur in different locations in the mitochondria. Which of the following does not properly match a step of respiration to its proper location?

A) Glycolysis - Cytoplasm
B) Krebs cycle - Mitochondrial matrix
C) Electron transport chain - Inner mitochondrial membrane
D) Oxidative phosphorylation - Endoplasmic reticulum

Answer 1

The step of respiration that does not match its location is Oxidative phosphorylation in the Endoplasmic reticulum; it occurs in the inner mitochondrial membrane.

Step-by-step explanation:

The correct matches are: Glycolysis occurs in the Cytoplasm (A), the Krebs cycle takes place in the Mitochondrial matrix (B), and the Electron transport chain is found in the Inner mitochondrial membrane (C). However, Oxidative phosphorylation does not take place in the Endoplasmic reticulum (D); it takes place in the inner mitochondrial membrane, alongside the electron transport chain. Therefore, option (D) does not properly match a step of respiration to its proper location.