B1.10 Exchanging materials Flashcards
1
Q
What is Surface area to volume ratio?
A
The surface area to volume ratio is crucial in biology.It
makes a big difference to substance exchange
2
Q
How to calculate it?
A
When an object/cell is very small, it has a large surface area to volume ratio, while a large object/ cell has a small surface area to volume ratio. When a cell grows, its volume increases at a greater rate than its surface area, therefore it’s SA: V ratio decreases.
