One advantage of angiosperm seeds is the presence of seed ____, a nutritive tissue produced during fertilization that nourishes the developing embryo.
a. a coat
b. endosperm
c. ovule
d. pollen sac
e. ovary
ANSWER: b
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In addition to mechanical breakdown and protein digestion, the stomach's other major function is (select all correct choices):
A. lipid digestion. B. nucleic acid digestion. C. food storage. D. glucose digestion. E. glucose digestion and food storage.
El Niño is a recurring weather phenomenon
that a. increases global warming. b. stabilizes world climates. c. produces a fluctuation in global weather. d. depletes the ozone layer. e. increases oceanic productivity
Carbon monoxide binds to hemoglobin at a site where oxygen would normally bind. This is an example of:
a. competitive inhibition b. non-competitive c. feedback inhibition d. chemical modification e. fermentation process
After the molecule shown here undergoes replication, what would be the result?
A) This strand will be twice as long. B) This molecule will consist of four twisted strands. C) Two new molecules will form, in addition to this original molecule. D) Two new molecules will form, each of which contains one strand from this molecule.