Question

what is the function of the epithelium?
a) building an impermeable barrier for food - borne pathogens
b) build a barrier that only allows certain substances to pass through
c) take up nutrients by passive and active transportation
d) all answers are correct.

Explanation:

Epithelium forms a barrier against food - borne pathogens, is semi - permeable allowing certain substances to pass, and can take up nutrients via passive and active transport.

Answer:

d) All answers are correct.