During intense physical activity, which cellular organelle is primarily responsible for meeting the increased energy demands of muscle cells?
Understand the Problem
The question asks which cell organelle is most important for providing energy during exercise. It's testing knowledge of cell biology and energy production.
Answer
Mitochondria.
During intense physical activity, mitochondria are primarily responsible for meeting the increased energy demands of muscle cells. They convert nutrients into ATP, which stores energy.
Answer for screen readers
During intense physical activity, mitochondria are primarily responsible for meeting the increased energy demands of muscle cells. They convert nutrients into ATP, which stores energy.
More Information
Mitochondria are often referred to as the "powerhouses of the cell" because of their crucial role in energy production.
Tips
A common mistake is confusing mitochondria with other organelles involved in muscle function, such as the sarcoplasmic reticulum (for calcium storage) or ribosomes (for protein synthesis).
Sources
- Muscle Mitochondria May Form Energy Power Grid - NIH - nih.gov
- Exercise and mitochondrial health - PMC - physoc.onlinelibrary.wiley.com
- Mitochondria: It is all about energy - PMC - pmc.ncbi.nlm.nih.gov
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