Gas Exchange Flashcards
1
Q
Gas Exchange
A
- it occurs over outside environment and internal environment of an organisms
- large SA
- Thin provides a short diffusion pathway across gas exchange surface
- maintains steep concentration gradient of gases across exchange surface which increases the rate of diffusion
2
Q
Single-Celled Organisms
A
- absorbs and releases gases by diffusion through their cell-surface membranes
- large SA
- thin surface
- short diffusion pathway
