Multiple choice

The size of a cell depends upon

  1. its oxygen requirement

  2. its minerals and materials requirements

  3. its regulating ability of the nucleus

  4. all of the above

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Cell size is regulated by the nuclear-cytoplasmic ratio (the nucleus can only control a limited volume) and metabolic demands. Oxygen needs affect mitochondrial content, material requirements determine cytoplasmic volume, and nuclear control mechanisms maintain size homeostasis.

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