Question

Which of the following statements are true of adaptive immunity? (Read carefully and SELECT ONLY 4 CORRECT STATEMENTS.)

a) Antibody production is characteristic of both antibody-mediated and cell-mediated immunity.
b) Opsonization is a reaction of cell-mediated immunity that attracts macrophages.
c) Memory B cells provide the memory of a pathogen in cell-mediated immunity.
d) Helper T cells help out with phagocytosis.
e) Cytotoxic T cells destroy cellular antigens by producing toxic chemicals.
f) Complement fixation is triggered by antigen-antibody complexes.
g) Helper T cells work with macrophages in the recognition of foreign antigens.
h) Antibodies are proteins produced by plasma cells that have differentiated from B cells

Answer 1

True statements of adaptive immunity include the destruction of cellular antigens by cytotoxic T cells, complement fixation by antigen-antibody complexes, helper T cells assisting macrophages, and antibodies being produced by plasma cells.

Step-by-step explanation:

Understanding Adaptive Immunity

Adaptive immunity refers to the immune responses that are specific to the pathogen that triggers them. It is characterized by specificity and memory, which provide long-lasting protection. Analyzing the provided statements, here are the true ones:

• e) Cytotoxic T cells destroy cellular antigens by producing toxic chemicals.
• f) Complement fixation is triggered by antigen-antibody complexes.
• g) Helper T cells work with macrophages in the recognition of foreign antigens.
• h) Antibodies are proteins produced by plasma cells that have differentiated from B cells.

These statements reflect key functions of adaptive immunity: the destruction of infected cells by cytotoxic T cells, the triggering of complement via antigen-antibody complexes, the collaboration of helper T cells with macrophages, and antibodies' production by plasma cells, which are derived from B cells.