Why is cell size limited?
1. relatively small due to diffusion of substances in and out of the cell
2. as cell size increases, the greater the time needed for diffusion
3. small cells have an advantage because of the surface are to volume ratio
| Term | Definition |
|---|---|
Why is cell size limited? | 1. relatively small due to diffusion of substances in and out of the cell
2. as cell size increases, the greater the time needed for diffusion
3. small cells have an advantage because of the surface are to volume ratio |
What is the rate of diffusion affected by? | 1. Surface Area
2. Temperature
3. Concentration gradient
4. Distance |
Larger cells need what? | to synthesis more, need more energy, and produce more waste |
What does rate of transportation (speed) depend on? | 1. Distance to membrane
2. area of the cell membrane available |
As cell size increases, what happens to the volume? | volume increases more quickly
ex: Cell A has a radius 10x Cell B
Cell A has surface area 100x Cell B
Cell A has volume 1000x Cell B
|
Greater surface area to volume ratio equals what? | smaller cell size |