Gas exchange and control of water loss Flashcards
1
Q
write a summary of the equation for aerobic respiration
A
glucose + oxygen —) carbon dioxide + water + energy
2
Q
how are gasses in aerobic respiration exchanged?
A
diffusion in opposite direction across the gas exchange surface
3
Q
state ficks law
A
rate of diffusion is proportional to the (surface area x difference in concentration) / length of diffusion pathway
4
Q
what will the most efficient gas exchange surfaces consist of ?
A
- large surface area
- maintain a high concentration gradient
- ensure that the exchange surface is as thin as possible
5
Q
what are singled celled organisms?
A
organisms with no special gas exchange surfaces
6
Q
how are single celled organisms adapted to gas exchange ?
A
- small size
- large surface area to volume ratio
- short diffusion pathway
