mitochondria in ear lobe cells are nearly____________?
Correct answer: B. 50
- A. 40
- B. 50
- C. 55
- D. 60
Explanation
An ear-lobe cell is relatively inactive compared with a muscle cell, so it contains approximately 50 mitochondria in the textbook estimate used here. Students may choose 40 because mitochondrial numbers vary between cells, but the expected rounded value in this question is 50.
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