Which hormone slows bone deposition?
a. cortisol
b. calcitonin
c. estrogen
d. testosterone
e. growth hormone
a
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The terminal electron acceptor in respiration may be
A. oxygen. B. nitrate. C. NAD. D. an inorganic molecule. E. oxygen, nitrate, AND an inorganic molecule.
Which of the following combinations represent prezygotic mechanisms of isolation?
a. hybrid breakdown and temporal isolation b. hybrid breakdown and gametic isolation c. hybrid sterility and temporal isolation d. mechanical and temporal isolation e. mechanical and hybrid breakdown
Human cases of complete myostatin deficiency ____
a. are very common b. are quite rare c. have never been identified d. are easy to study e. result from nutritional deficiencies
Hydrogenation is a chemical process that
a. turns liquid oil to solid fats. b. turns amino acids into proteins. c. turns DNA into lipids. d. creates stable alternative energy sources. e. does none of these