Which is TRUE regarding the immune system cells?
A. Plasma cells are derived from T cells.
B. Macrophages are derived from basophils.
C. Macrophages are derived from monocytes.
D. The immune cells found within the bloodstream are called erythrocytes.
E. Neutrophils are classified as lymphoid cells.
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Question 2) Which of the following statements about the immune system is TRUE?
A. Neutrophils, basophils, eosinophils, and monocytes originate in bone marrow.
B. Natural killer cells produce specific antibodies that kill bacteria and viruses.
C. Mast cells are derived from monocytes.
D. Plasma cells are derived from T lymphocytes.
E. Macrophages are derived from neutrophils.
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Question 3) After initial entry of bacteria into a cut in the skin, vasodilation of local blood vessels and increased capillary permeability occur. Which of the following events is NOT part of the adaptive immune response to the infection?
A. antigen interaction with lymphocytes
B. production of antibodies that bind to antigens
C. B-cell differentiation into plasma cells
D. vasodilation of local blood vessels
E. activation of lymphocytes
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Question 4) Which of the following statements regarding the chemical mediators of inflammatory responses is NOT true?
A. They may be secreted by cells residing in the area of injury.
B. They may be secreted by cells that enter the affected area.
C. They may be generated by enzymatic cleavage of proteins in plasma.
D. They are all peptides.
E. They may be chemotaxins.
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Question 5) Which is NOT true about viruses?
A. They consist of a nucleic acid surrounded by a carbohydrate shell.
B. They require a host cell in order to reproduce themselves.
C. They may reside in a host cell for years without killing it.
D. They may cause a host cell to become cancerous.
E. They may have genetic information in the form of RNA.
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Question 6) The immune system destroys or neutralizes:
A. bacteria.
B. viruses.
C. nonmicrobial foreign substances.
D. cancer cells that arise in the body.
E. All of the choices are correct.
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Question 7) Infertility treatments most often involve the injection of aromatases, leading to enhanced numbers of developing early ovarian antral follicles.
Indicate whether the statement is true or false.
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Question 8) If an egg is present in the oviduct, fertilization is promoted only after several hours of capacitation have passed for sperm cells.
Indicate whether the statement is true or false.
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Question 9) 99.9 of the ovarian follicles a woman produces in her lifetime are viable and capable of being fertilized.
Indicate whether the statement is true or false.
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Question 10) The onset of puberty may be delayed in girls who are very thin.
Indicate whether the statement is true or false.
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