Topic 8 Flashcards
1
Q
Factors affecting rate of diffusion
A
Surface area
Thickness of membrane
Concentration gradient
2
Q
Fick’s law
A
Rate of diffusion is proportional to
Surface area x conc. did. /
Thickness of membrane
3
Q
What type of reaction is aerobic respiration
A
Exothermic as it releases energy
4
Q
How do plants use respiration
A
Build larger molecules from smaller ones
Eg sugars to amino acids to proteins
5
Q
Rate of respiration practical
A
Organism to respire
Tight lid
Soda lime (absorb co2)
Liquid in tube (move)
6
Q
How to work out rate of respiration
A
Change/time
7
Q
Cardiac output formula
A
Stroke volume x heart rate
