Multiple Choice
Which of the following statements is correct about diffusion?
A) It is very rapid over long distances.
B) It requires an expenditure of energy by the cell.
C) It is a passive process in which molecules move from a region of higher concentration to a region of lower concentration.
D) It is an active process in which molecules move from a region of lower concentration to one of higher concentration.
E) It requires integral proteins in the cell membrane.
Correct Answer:
Verified
Correct Answer:
Verified
Q62: In what way do the membranes of
Q63: For the following questions, match the labeled
Q64: Cystic fibrosis is a genetic disease in
Q65: Why are lipids and proteins free to
Q66: Cystic fibrosis is a genetic disease in
Q68: Celery stalks that are immersed in fresh
Q69: Proton pumps are used in various ways
Q70: Glucose diffuses slowly through artificial phospholipid bilayers.
Q71: Who was/were the first to propose that
Q72: What kinds of molecules pass through a