Multiple Choice
In the context of mitochondria, why do some cells (e.g., skeletal muscle cells) contain more mitochondria than others (e.g., many adipocytes)?
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11. Aerobic Respiration
Mitochondria
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Compared with most other cell types in the body, do skeletal muscle cells typically contain more mitochondria, and why?
A
No; muscle cells rely mainly on lysosomes for ATP production, so they have fewer mitochondria.
B
No; mitochondria are absent from differentiated skeletal muscle cells because their nuclei supply ATP directly.
C
Yes; they have high ATP demand for repeated contraction, so they are enriched in mitochondria for aerobic respiration.
D
Yes; mitochondria are needed primarily for storing glycogen used during muscle contraction.
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