Surface Area to Volume Ratio (SA:V)

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Last updated 12:42 AM on 5/28/26
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6 Terms

1
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What is the surface area to volume ratio?

The amount of surface area compared to the volume of a cell

2
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Why is SA:V important for cells?

It affects how efficiently substances move in and out of the cell

3
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What happens to SA:V as a cell gets larger?

The ratio decreases.

4
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Why is a low SA:V ratio a problem?

The cell cannot exchange nutrients and wastes fast enough to meet demands.

5
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How does SA:V limit cell size?

Cells cannot grow too large because transport becomes inefficient

6
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What are two ways cells overcome SA:V limitations?

  1. Remaining small

  2. Having folded membranes or specialised internal compartments