2
QuizMultiple Choice

Unit Test — Unit test

Question 2 • 2026-2027 EDGE Human Anatomy and Physiology A

There are many mitochondria in muscle cells. Which best explains how this is important to cellular respiration?

Answer
A
Mitochondria are responsible for DNA replication, which allows more energy to be generated.
B
Mitochondria are plentiful in muscles so that new muscle can be created.
C
Muscles need lots of energy, and glycolysis delivers this energy to mitochondria.
D
Muscles need lots of energy, and the final stage of cellular respiration takes place in the mitochondria.

Explanation

Muscle cells use a great deal of energy to contract. The final stages of cellular respiration, including the electron transport chain that produces most of the cell’s ATP, take place in mitochondria, so having many mitochondria helps meet this energy demand. Glycolysis occurs in the cytoplasm, not in mitochondria.

AI-written and checked against the verified answer.

Previous
Next