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State whether the following is true or false.
Doubling the diameter of a spherical cell doubles its surface area to volume ratio.

  • A.False only at small scales
  • B.True
  • C.False
  • D.True only at large scales

Answer: C

It halves the ratio instead. Surface area rises with the square of the radius while volume rises with the cube, so the ratio falls as size increases. This is the whole reason cells stay small, and why large organisms add cells rather than enlarging them.

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