Factors Affecting The Rate Of Movement In And Out Of Cells Flashcards
1
Q
What factors affect the rate if movement in and out of cells
A
- surface area: volume ration
- temperature
- distance
- concentration gradient
2
Q
Surface area : volume ratio
A
The larger the surface area:volume ratio, the faster the rate of movement across membranes.
3
Q
Temperature
A
Increasing the temperature will increase the kinetic energy of the molecules. The molecules with therefore move faster across the membrane.
4
Q
Distance
A
The smaller the distance the faster the molecules can travel into/out of cells.
5
Q
Concentration gradient
A
A high concentration gradient needs to be maintained to prevent the rate of molecules moving across membranes decreasing.
