Distinguish between the responses of the various types of lymphocytes. What mechanism does each cell type use to combat invaders to the body?
What will be an ideal response?
Lymphocytes are white blood cells involved in health and disease. There are three kinds: B cells, T cells, and natural killer (NK) cells. B cells form in bone marrow and fight infectious agents (such as viruses or bacteria) by producing antibodies that chemically suppress the “invaders” (more generally known as antigens). T cells are produced in the thymus, and attack antigens directly by injecting a lethal toxin into the unwanted cells. NK cells also combat antigens directly and also use a lethal chemical. NK cells are important because they often detect antigens that are missed by B and T cells.
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Someone victimized by a crime, disease, or other tragic life event is likely to a. affiliate and compare themselves with others in the same situation. b. affiliate and compare themselves with others who are worse off. c. affiliate with others who are worse off, but compare themselves to others in the same situation and haveadjusted well
d. affiliate with others who are in the same situation and have adjusted well, but compare themselves to otherswho are worse off.
Donders' main reason for doing his choice reaction time experiment was to study
a. sensation. b. childhood attachment styles. c. decision making. d. personality development.
If the U.S. Transportation Security Administration (TSA) orders that almost all people flying receive a "pat down" as they go through security at the airport, the TSA would be making a large number of _____ in their screening for terrorists.
A) hits and misses B) misses C) false alarms D) misses and false alarms
A scientist will evaluate a hypothesis by using:
a. empiricism. b. a theory. c. naturalistic observation. d. exploratory research.