A species' numbers are so severely reduced that it is in imminent danger of extinction throughout all or a significant
part of its range. This species would be considered:a.
extinct.
b. extant.
c. endangered.
d. threatened.
e. endemic.
c
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When a person absorbs more glucose from their diet than they need, the excess is____
a. flushed from the system as waste b. stored as glycogen in the muscle and liver cells c. stored as fat in the adipose cells d. stored as ATP in the muscle cells e. stored as glycogen in the muscle and liver cells, and as fat in the adipose cells
Researchers attempt to explain the persistence of
altruism by the theory of a. self-sacrificing behavior. b. dominance hierarchy. c. social behavior. d. iinclusive fitness e. sexual selection.
When tissues organize, what do they form?
a. a cell b. a nucleus c. an atom d. an organ e. an enzyme
Why do the centromeres of sister chromatids stay firmly connected during anaphase I?
a) The proteins of the centromere region are impervious to lipase digestion. b) The cohesin situated at the centromeres is digested by nucleolytic enzymes. c) The DNA of the centromeres is hydrolyzed by proteolytic enzymes. d) They are fused together at the level of their double helices. e) The cohesin situated at the centromeres is protected from proteolytic attack.