Question

1. which statement best explains why muscle cells contain many mitochondria?

a. they store genetic material
b. they require large amounts of atp
c. they divide frequently
d. they perform photosynthesis

Explanation:

• Option a: Genetic material is stored in the nucleus, not related to mitochondria's function in muscle cells.
• Option b: Mitochondria are the powerhouses of the cell, producing ATP. Muscle cells need large amounts of ATP for contraction, so having many mitochondria makes sense.
• Option c: Muscle cells do not divide frequently; this is not a reason for many mitochondria.
• Option d: Muscle cells are animal cells and do not perform photosynthesis (which is done by plant cells with chloroplasts).

Answer:

b. They require large amounts of ATP