2.3 - Cell size Flashcards
1
Q
Why can smaller cells exchange materials more efficiently with their environment?
A
They have a higher surface area-to-volume ratio.
2
Q
When cells increase in volume
A
Surface area decreases and demand for internal resources increases.
3
Q
Why are membrane folds important?
A
They increase surface area to exchange materials with environment.
4
Q
As organisms increase in size
A
Their surface area decreases.
- Affects rate of heat exchange with environment.
5
Q
Specialized structures that are used for efficient exchange of molecules
A
Root hair cells, gut epithelial cells, guard cells.
