Membrane Transport Flashcards
0
Q
Passive transport types
A
- Simple diffusion
2. Facilitated diffusion
1
Q
Two types of membrane transport
A
- Passive
2. Active - requires ATP
2
Q
Simple diffusion
A
- diffusing right across the membrane
- o2 co2 lipids certain hormones
- flow down a concentration gradient
3
Q
Facilitated diffusion
A
-help larger more polar things diffuse from higer to lower
4
Q
Active tranport types
A
- Primary
2. Secondary
5
Q
Primary active transport
A
- go against concentration gradient
- directly coupled to ATP hydrolysis
- na/k pump
6
Q
Secondary active transport
A
- Not dirctly coupled to ATP hydrolysis
- pump one solute across the membrane using ATP hydrolysis using a concentration gradient
- when it comes back down a gradient you use to to push something against the gradient
7
Q
Na/k pump
Higher concentration of na inside or outside of cell?
A
Outside
8
Q
Na/k pump
Higher concentration of k inside or outside of cell
A
Inside
9
Q
Na/k pump
A
- Primary active transport
- pumps 3 na out of the cell
- pumps 2 k into the cell
- coupled to ATP hydrolysis
10
Q
Na/k pump
Glucose
A
- glucose spontaneously comes in with na
- secondary active transport
