Auxins primarily flow downward in shoots and roots and this transport is called
A. nonpolar.
B. dipolar.
C. polar.
D. bipolar.
E. tripolar.
Answer: C
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Which one of the following is not a component of an amino acid?
A. an alpha carbon B. an amino group C. a carboxyl group D. an R group E. a phosphate group
A technique used in dating a rock can be used to accurately predict the age of the fossils occurring in the rocks. This technique involves
A. fossil dating. B. successive rock layering. C. radioactive isotope decay. D. structural geology. E. developmental geology.
When two Aa glyptodonts mate, what percentage of their offspring would you expect to have yellow shells?
a. 0% b. 25% c. 50% d. 100%
Menstruation begins in response to
a. rising levels of FSH and LH. b. falling levels of estrogen. c. falling levels of progesterone. d. falling levels of estrogen and progesterone. e. GnRH secretion.