Surface area to volume ratio Flashcards

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1
Q

State the formula for surface area to volume ratio

A

SA:V ratio = surface area ÷ volume

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2
Q

What happens to surface area to volume ratio as a cell increases in size? Explain why this places a limit on the size of cells.

A
  • As cell size increases, the SA:V ratio decreases.
  • There means there is relatively less surface area per unit volume, resulting in the cell becoming less efficient at exchanging substances with the extracellular environment.
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