Which of the following is not a function of antibodies?
a. They neutralize pathogens by masking their surface.
b. They act as molecular adaptors that bridge together pathogen and phagocyte surfaces.
c. They exert toxic effects directly.
d. They act as opsonins that mediate phagocytosis.
e. They activate complement fixation.
C
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A legal document prepared by the patient that gives instructions about the health care to be provided if the patient becomes terminally ill or falls into a permanent coma or persistent vegetative state is:
A) a contract. B) a durable power of attorney. C) a living will. D) none of the above.
Which of the following statements about duration of exercise is FALSE?
A. weight loss has been most successful for people who do up to 90 minutes of daily moderate-intensity activity B. accumulating 30 minutes or more of moderate-intensity activity can provide substantial health benefits C. duration is based on how intensely a person trains D. exercise sessions should always be preceded by a cool-down E. exercise duration should be increased gradually to avoid fatigue and exercise-related injuries.
Which of the following terms includes a combining vowel?
A. Endocardium B. Bradycardia C. Gastric D. Gastritis E. Neuropathy
All,of the following factors have contributed to the obesity epidemic in the United States EXCEPT
a) a low intake of dietary protein b) an excessive intake of foods high in fat and sugar c) a lack of physical activity d) an increase in portion sizes