Question

For each of the following substances, indicate how they will get through the plasma membrane and into the cell. in this case, consider channel proteins and charged channel proteins to be different, and use two more precise terms for endocytosis.

a. water
b. a protein
c. a Mg²+ ion
d. a monosaccharide (simple sugar)
e. an invading bacterium
f. a lipid

Answer 1

a. Water will go into the cell through the cell membrane by simple diffusion.
b. A protein will go through a channel protein that carries the protein inside the cell.
c. A Magnesium ion will pass through using charged channels.
d. A simple sugar will be carried by transmember proteins or transporters.
e. An invading bacterium will force its way into the cell by passive diffusion.
f. A lipid will be allowed to pass by lipid layers in the cell membrane.