Marine snow is a major source of energy for the ____ region of the ocean
a. littoral
b. aphotic
c. euphotic
d. intertidal
e. neustonic
b
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Acetyl-CoA synthesis is an important step in cellular respiration because:
A. it generates ATP by substrate level phosphorylation. B. it transfers large numbers of high-energy electrons to electron carriers. C. it links glycolysis with aerobic respiration. D. it eliminates toxic pyruvate from the cell. E. it is the first step in oxidative phosphorylation.
The homeotic gene Hoxc6 is the vertebrate version of ____, which determines the identity of the thorax in fruit flies
a. Dlx b. thoracia c. RHO d. CCR5 e. antennapedia
The enzyme responsible for converting free carbon dioxide in the blood into forms in which it can be
transported in the blood is a. carbonic anhydrase. b. carboxypeptidase. c. carbonase. d. decarboxylase. e. dehydrogenase.
The luteinizing hormone
a. influences ovulation. b. has no function in males. c. is produced by the corpus luteum. d. stimulates milk production. e. promotes sperm formation.