Answer:
C. cell membranes
Explanation:
the black/dark material that is visible in many of these onion cells is cell membranes.
Answer: im just going to say that i can barely see the answers
Explanation:
The part that you sense with that's the hearing part
I believe that on the Naive B-cell the antibodies exist as transmembrane proteins. A naive b-cell is a type of b-cell that has not been exposed to an antigen. When exposed it becomes either a memory B cell or a plasma cell that secrete antibodies specific to the antigen that was originally bound.