Answer:
the dendrites, the cell body (also called the "soma"), the axon and the axon terminal
Explanation:
C. Macrophages
When Macrophages approach a foreign pathogen they ingest the pathogens through phagocytosis, the Macrophages show the foreign antigen proteins on their cell surfaces.
The Helper T Cell recognizes the antigen on the surface of the macrophage and starts an immune response to the invading pathogen by sending out a chemical message
After that the B-cells produce antibodies that are specific to the antigens of the pathogens that slow them down so the macrophages can engulf them.
D. it begins the hydrolysis of protein in the stomach
Although there is no picture of the aquarium mentioned, the answer would be (D) because all of the other options are biotic elements.
