Question

the cell
which term describes a cells membrane?
a. rigid and tough
b. phospholipid monolayer
c. selectively permeable
d. permeable

Explanation:

A cell membrane is a phospholipid bilayer (not monolayer as in option b). It is not rigid (so option a is wrong). A permeable membrane (option d) would let everything through, but cell membranes control what enters and exits (selective). So, the correct property is selectively permeable.

Answer:

C. selectively permeable