Question

in the bodies of animals, a muscle cell may contain thousands of mitochondria. how are the mitochondria useful to a muscle cell? (1 point)
the mitochondria provide the energy that the muscle cell uses.
the mitochondria store water and nutrients that the muscle cell needs
the mitochondria control the activities of the muscle cell.
the mitochondria make food for the muscle cell.

Explanation:

To solve this, we analyze each option:

• Mitochondria are known as the "powerhouses of the cell" because they produce ATP (energy) through cellular respiration. So the first option ("The mitochondria provide the energy that the muscle cell uses") is correct.
• Storage of water and nutrients is done by vacuoles (in plant cells) or other structures, not mitochondria. So the second option is incorrect.
• The nucleus controls the activities of the cell, not mitochondria. So the third option is incorrect.
• Muscle cells do not make their own food (they are heterotrophic), and mitochondria don't make food. Chloroplasts (in plant cells) are involved in making food (photosynthesis). So the fourth option is incorrect.

Answer:

A. The mitochondria provide the energy that the muscle cell uses