Lecture 22 Flashcards
1
Q
Non-mediated
A
- Does not directly use a transport protein
2
Q
Mediated
A
- Requires transport proteins
3
Q
Importance of non-mediated diffusion through the bilayer
A
- Absorption of nutrients
- Excretion of waste
- Passive movement
4
Q
Ion channels structure
A
- water filled pores that span the hydrophobic core of the lipid bilayer allow passage of ion molecules
5
Q
What lines the channel proteins
A
- Amino acids line in the pore
6
Q
Passive transport
A
- Move substances down the concentration or electrochemical gradient with only their kinetic energy
7
Q
Active transport
A
- Uses energy to drive substances against their concentration or electrochemical gradient
8
Q
Different stimuli can control opening and closing of gated pores
A
- voltage gated
- Ligand binding
- volume of Cell
- pH
- Phosphorylation
9
Q
Current flow can be measured or recorded by
A
- The patch clamp technique
10
Q
Carrier mediated transport exhibit
A
- specificity
- inhibition
- competition
- saturation
