Figure 45-1
Use the figure to answer the corresponding question(s).
-The immune system component with a principal role at point B in Figure 45-1 is:
A) memory cells.
B) IgM antibodies.
C) IgG antibodies.
D) cytotoxic T cells.
E) antibody IgA.

Question

Figure 45-1
Use the figure to answer the corresponding question(s). 
-The immune system component with a principal role at point B in Figure 45-1 is:
A) memory cells. 
B) IgM antibodies. 
C) IgG antibodies. 
D) cytotoxic T cells. 
E) antibody IgA.

Quizplus · Accepted Answer

Memory cells are the immune system component with a principal role at point B in Figure 45-1. Memory cells are long-lived lymphocytes that are produced during an immune response to a specific antigen. They are responsible for providing long-term immunity to that antigen.

Figure 45-1 Use the Figure to Answer the Corresponding Question(s)