FACTORS AFFECTING THE RATE OF DIFFUSION Flashcards
1
Q
How many factors affect the rate of diffusion?
A
5 factors
2
Q
What are the factors?
A
Distance Concentration gradient Temperature Size Surface Area
3
Q
distance…
A
The shorter the distance the better, e.g. thin walls of alveoli and capillaries.
4
Q
concentration gradient…
A
The bigger the better
5
Q
Size
A
The smaller the size of the molecules the better
6
Q
Surface area
A
The larger the better
7
Q
Temperature
A
Higher the better *molecules have more kinetic energy at a higher temperature
8
Q
3 IMPORTANT ROLES OF DIFFUSION -GASES AND SOLUTES…
A
- Obtain their requirements
- Get rid of waste products
- Gas exchange for respiration
