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The Fundamental Unit of Life — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceThe Fundamental Unit of Life1 Mark
MCQ
Generally, smaller the cell:
  • A
    The larger the nuclei.
  • B
    The smaller the nuclei.
  • ✓
    It will be metabolically more active.
  • D
    It will be metabolically less active.
✓

Answer

Correct option: C.
It will be metabolically more active.
The surface area of cells determines the exchange of materials. The increase in the volume of the cell increases its metabolic activity. However, surface area does not increase correspondingly with the volume. Therefore, larger cells are less efficient. Metabolically active cells are usually small with the higher surface area with per unit volume.

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