Most cancers are
A) environmentally triggered.
B) the result of life style.
C) inherited.
D) viral infections.
E) both choices A and B
E) both choices A and B
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The human immunodeficiency virus mounts a direct attack on TH cells by recognizing the _______ surface proteins associated with these cells.
A. Fc B. CD4 C. epitope D. cytokine
The use of two ATP molecules at the beginning of
glycolysis is comparable to __________ in finances. a. a dividend b. a credit c. a debt d. an investment e. liquidity
An illegal practice is found among some athletes who try to increase the normal number of RBCs in an attempt to boost oxygen delivery. This practice is called ________
A) blood doping B) leukemia C) bloodletting D) bone marrow transplant
The specificity of an antibody is due to
A) its valence. B) the H chains. C) the L chains. D) the constant portions of the H and L chains. E) the variable portions of the H and L chains.