Membrane transport Flashcards
1
Q
What is the role of cholesterol in the plasma membrane?
A
It helps with the fluidity of the membrane
2
Q
What is the role of carbohydrates on the plasma membrane?
A
Cell to cell recognition
* cell signaling
* Acts as a barrier
glycolipid
3
Q
What substances does the plasma membrane allow to cross directly?
A
Gases, hYDROPHOBIC MOLECULES, small polar molecules, soluble lipids
O2, CO2, Benzene, Ethanol
4
Q
What substances can’t cross the plasma membrane directly?
A
Large polar molecules, Charged molecules
Glucose, amino acids, ions
5
Q
A
6
Q
A
