Bio 2010 - Microbiology » Spring 2023 » 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 enables many different antibodies to be made that all have different specificities of binding.
B.   It helps the antibodies to function with very low affinity and specificity.
C.   It helps in communication of antibodies with other components of immune system.
D.   It enables many different antibodies to be made that all have same specificities of binding.
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 passive 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 active 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 from the pathogen is presented simultaneously to memory helper T-Cells, memory T-cells, and memory B-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 presenting-cells present antigens memory helper T-cells, followed by memory B-cells followed, by memory T-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.   Pathogens are changed so they are no longer harmful
C.   Innate defenses are strengthened
D.   Stimulated memory cells quickly engulf pathogens
E.   The proper antibodies are constantly circulating in the blood
Question #5
Which immune system response could best be characterized as adaptive?
A.   In the inflammatory response, mast cells produce histamine to facilitate the travel of immune cells and plasma to the afflicted area
B.   After the first exposure to an antigen, memory B-lymphocytes are produced to recognize the same antigen upon a second exposure
C.   The epithelium of the skin blocks most pathogens from ever entering the body
D.   A phagocyte engulfs and destroys bacteria, dead cells, and other potentially harmful particles that it encounters
Question #6
Which cell is responsible for stimulating differentiation of B-lymphocytes into specialized plasma cells?
A.   Helper T-cells
B.   Memory B-cells
C.   Antibodies
D.   Cytotoxic T-cells
Question #7
What type of cell creates free antibodies that then circulate in the bloodstream?
A.   Monocytes
B.   Plasma cells
C.   Helper T-cells
D.   Memory B-cells
E.   Cytotoxic T-cells
Question #8
Cytotoxic T cells kill target cells __________.
A.   through injection of tumor necrosis factor
B.   through insertion of perforins into the target's membrane.
C.   by releasing oxidizing agents.
D.   by phagocytosis.
E.   by secreting antibodies.
Question #9
Which statement below is characteristic of a secondary humoral response?
A.   It results in fewer memory cells.
B.   It occurs much more rapidly than the primary response.
C.   It triggers fever.
D.   It occurs ONLY in the spleen.
E.   It results in less antibody secretion.

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