Refresh lecture Flashcards
1
Q
What percentage of the weight of the cell membrane is made up of lipids?
A
42%
2
Q
What percentage of the weight of the cell membrane is made up of proteins?
A
55%
3
Q
What percentage of the weight of the cell membrane is made up of carbohydrates?
A
3%
4
Q
What is interstitial fluid?
A
Extracellular fluid which surrounds cells
5
Q
What is intracellular fluid?
A
Fluid found inside of cells
6
Q
Is Na+ concentration higher in the intra or extracellular compartment?
A
Extracellular
7
Q
Is K+ concentration higher in the intra or extracellular compartment?
A
Intracellular
8
Q
What does the Na+/K+ ATPase transport?
A
3 Na+ out of the cell and 2 K+ into the cell
9
Q
What does Na+/K+ ATPase maintain?
A
Low intracellular Na+
10
Q
What is a symporter?
A
- Cotransporter
- Transports more than one ion/solute at once in the SAME direction
11
Q
What is an antiporter?
A
- Exchanger
- Transports more than one ion/solute at once in OPPOSITE directions
