Answer:
C. The reactions take up too much space in the cell if the enzymes are missing.
Explanation:
Melanin is a pigment that is produced by cells known as melanocytes in the skin of most animals, including humans. ...
After the macrophage fails the Helper T Cell stimulates the B cells if pathogen is extracellular and Cytotoxic T Cells if the pathogen is intracellular. Once the pathogen is killed the B Cells create Memory B Cells and the Killer T Cells create memory T Cells.
Explanation:
I think the answer is B . . . .