When the blood level of calcium rises too high, which hormone stimulates osteoblasts to deposit
calcium into bone?
a. growth hormone
b. thyroid hormone
c. calcitonin
d. thyroid hormone
e. PTH
C
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What is the apical complex of apicomplexans used for?
a. food absorption b. attachment c. structural support d. asexual reproduction
Cellulose and starch are examples of ______.
a) monosaccharides b) polysaccharides c) disaccharides d) lipids
Succession happens because species in the habitat alter that habitat in ways that assist other species. There are three dynamic concepts that are of critical importance for succession to take place. They are
A. establishment, coevolution, and competitive exclusion. B. establishment, facilitation, and inhibition. C. competition, climax communities, and tolerance. D. symbiotic relationships, facilitation, and aposematic coloration. E. competition, inhibition, and coevolution.
The central axis around which the shell of a snail coils is called the
a. Aperture b. Columella c. Sinistral d. Dextral e. Torsion