Bio 1010 - General Biology » Summer 2022 » Chapter 16 Quiz

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Question #1
What function does the diversity of the variable region of an antibody help it perform?
A.   It helps the antibodies to function with very low affinity and specificity.
B.   It enables many different antibodies to be made that all have same specificities of binding.
C.   It enables many different antibodies to be made that all have different specificities of binding.
D.   It helps in communication of antibodies with other components of immune system.
Question #2
How can you explain that the same antibodies found in an infant’s body are also present in the infant’s mother?
A.   Antibodies produced in the mother’s body are passed to the infant via active immunity through breast milk.
B.   Antibodies produced in the infant’s body are passed to the mother via active immunity through the placenta.
C.   Antibodies produced in the mother’s body are passed to the infant via passive immunity through experiencing the same environment.
D.   Antibodies produced in the mother’s body are passed to the infant via passive immunity through breast milk.
Question #3
Which of the following statements best represents antigen presentation in an acquired immune response to a pathogen?
A.   Antigen from the pathogen is presented specifically to memory T-cells to activate cytotoxic T-cells to clear the infection
B.   Antigen presenting-cells present antigens memory helper T-cells, followed by memory B-cells followed, by memory T-cells
C.   Antigen from the pathogen is presented to memory helper T-cells to stimulate a new round of B-cell clonal selection and antibody response
D.   Antigen from the pathogen is presented simultaneously to memory helper T-Cells, memory T-cells, and memory B-cells
Question #4
Once an individual becomes exposed to a pathogen, the body's immune system responds faster against a second exposure to the same pathogen. Why does this occur?
A.   Specific lymphocytes quickly produce the proper antibodies
B.   Stimulated memory cells quickly engulf pathogens
C.   Pathogens are changed so they are no longer harmful
D.   Innate defenses are strengthened
E.   The proper antibodies are constantly circulating in the blood
Question #5
Which immune system response could best be characterized as adaptive?
A.   The epithelium of the skin blocks most pathogens from ever entering the body
B.   After the first exposure to an antigen, memory B-lymphocytes are produced to recognize the same antigen upon a second exposure
C.   A phagocyte engulfs and destroys bacteria, dead cells, and other potentially harmful particles that it encounters
D.   In the inflammatory response, mast cells produce histamine to facilitate the travel of immune cells and plasma to the afflicted area
Question #6
Which cell is responsible for stimulating differentiation of B-lymphocytes into specialized plasma cells?
A.   Cytotoxic T-cells
B.   Memory B-cells
C.   Helper T-cells
D.   Antibodies
Question #7
Cytotoxic T cells kill target cells __________.
A.   through injection of tumor necrosis factor
B.   by secreting antibodies.
C.   by releasing oxidizing agents.
D.   through insertion of perforins into the target's membrane.
E.   by phagocytosis.
Question #8
Which statement below is characteristic of a secondary humoral response?
A.   It occurs ONLY in the spleen.
B.   It occurs much more rapidly than the primary response.
C.   It triggers fever.
D.   It results in fewer memory cells.
E.   It results in less antibody secretion.

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