For diffusion to occur, there must be a. a selectively permeable membrane. b. equal amounts of solute. c. a concentration difference. d. some sort of carrier system. e. all of the above. In which of...

For diffusion to occur, there must be

a. a selectively permeable membrane.

b. equal amounts of solute.

c. a concentration difference.

d. some sort of carrier system.

e. all of the above.

In which of the following tissue types might you expect to find goblet cells?

a. Simple cuboidal

b. Simple columnar

c. Simple squamous

d. Stratified squamous

e. Transitional