- A Sarcoplasmic reticulum
- B Nuclei
- C Mitochondria
- D Peroxisomes
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Answer:
C
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Mitochondria are known as the powerhouse of the cell, as they are responsible for producing ATP, which is the primary energy source for cells. The red fibres of muscle contain a high concentration of mitochondria, which allow for the production of ATP to power muscle contraction. In addition to mitochondria, red fibres also contain a high concentration of myoglobin, a red-colored protein that stores oxygen and allows for sustained aerobic respiration in the muscle.
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