Human facial expressions in response to various emotions
A) vary according to race.
B) vary according to age.
C) vary according to sex.
D) are remarkably similar among different cultures.
E) vary tremendously from culture to culture.
D
Biology & Microbiology
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The insoluble layer of aromatic alcohols that are primarily found in woody tissues are the
A) annulus. B) cadherins. C) proteoglycans. D) lignins. E) pectins.
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Immunological tests may determine the presence of
A. only antibody. B. only antigen. C. antigen or antibody. D. neither antibody nor antigen.
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The secretion of melatonin by the pineal gland is much greater during the day than during the night.
a. true b. false
Biology & Microbiology
What are the roles of ATP and NADPH in photosynthesis?
What will be an ideal response?
Biology & Microbiology