Question

1. why do muscle cells contain many mitochondria?

a. they divide quickly
b. they require high atp output
c. they contain chloroplasts
d. they store extra dna

Explanation:

• Option A: Muscle cells do not divide quickly; this is not related to mitochondrial count.
• Option B: Mitochondria are the powerhouses of the cell, producing ATP. Muscle cells need a lot of energy (ATP) for contraction, so they have many mitochondria to meet this high ATP demand.
• Option C: Muscle cells are animal cells and do not contain chloroplasts (which are in plant cells for photosynthesis).
• Option D: Muscle cells do not store extra DNA in a way related to mitochondrial presence.

Answer:

B. They require high ATP output