BIOLOGY B1 Flashcards
1
Q
Define DIFFUSION
A
DIFFUSION is the net movement of particles from an area of HIGH concentration to an area of LOW concentration. Due to the RANDOM movement of particles.
2
Q
What type of process is DIFFUSION?
A
Diffusion is a PASSIVE process which means that NO ENERGY is required for it to occur
3
Q
What is a CONCENTRATION GRADIENT?
A
A difference in concentration between 2 areas
4
Q
Name 3 factors that effect diffusion
A
- The Concentration Gradient
- Temperature
- How Large A Surface Area Is
5
Q
What 3 things increase the speed of diffusion?
A
- a larger concentration gradient
- a higher temperature
- a larger surface area
6
Q
The surface area:volume ratio falls as the object gets bigger
A
The surface area:volume ratio falls as the object gets bigger
