How do we fuel our body? - Compendium 5 Flashcards
1
Q
List the ways that ions and molecules can pass through the cell membrane
A
Passive transport
- Diffusion through lipid bilayer
- diffusion through ion channels
- osmosis
- facilitated diffusion using a carrier
Active transport
- primary
- secondary
Vesicular transport
- Endocytosis
- Exocytosis
2
Q
Explain the process of osmosis and concentration gradients in controlling movement across the cell membrane
A
Water diffusing across a selectively permeable membrane. When solute is dissolved into water the higher concentrated area of solute will attract the water and allow it to diffuse through a membrane
3
Q
What is hypotonic
A
Low solute concentrate, Water enters cell
4
Q
What is isotonic
A
Concentration equal to that inside the cell. Water enters and leaves the cell freely
5
Q
Hypertonic
A
High solute concentration. Water leaves the cell and dehydrates it.
6
Q
What is the difference between facilitated diffusion and normal diffusion?
A
