Blood cells that attach to types of tumor cells and cells infected with viruses are known as ____.
A. B cells
B. T cells
C. cytotoxic T cells
D. natural killer cells
Answer: D
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What statement best describes common findings related to comarital sex? a. Couples who engage in comarital sex were much more popular in the 1970s and have since been on the decline. b. Couples who engage in comarital sex often come from families where comarital sex was practiced
c. Many couples, especially men, who practice comarital sex report that jealousy increases their sexual excitement. d. Most couples who engage in comarital sex do not identify themselves as church-goers.
According to anthropologist Colin Turnbull,
a. Americans know when it is time to die and accept that fact. b. Americans want to live forever. c. Africans know when it is time to die and accept that fact. d. Africans want to live forever. e. Both b and c.
Rotter assumes that much of our behavior is goal-directed
Indicate whether the statement is true or false
The HPV vaccine works by ____
a. killing the HPV virus in the body b. inducing the body to produce antibodies against specific types of HPV c. inducing the body to produce antibodies against all types of HPV d. giving the person antibodies to protect them against HPV