Proteins comprise of ___________% of the total dry weight of a cell?
Correct answer: B. 50%
- A. 40%
- B. 50%
- C. 60%
- D. 70%
Explanation
Proteins make up approximately 50% of the dry mass of a typical cell, reflecting their roles as enzymes, structural materials, transporters and cell machinery. Students may choose 60% by confusing the proportion of protein in some tissues or organisms with the usual cellular dry-weight estimate.
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