Carbon is incorporated into the skeletons of corals and other marine organisms through the process of _____________. The CaCO3 making up these skeletons, in turn, becomes a major component of sedimentary rocks after these organisms die
A. chemical weathering.
B. subduction.
C. biomineralization.
D. inorganic mineralization.
E. bacterial oxidation.
C
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Hypothetically, if electron pools existed in sufficient numbers for enzymes to use in metabolic reactions,
A) a higher diversity of cytochromes would likely be observed. B) cytochromes would be unnecessary for cells and quinones would be more important. C) Q-cycle reactions would no longer be necessary for electron transport, but the proton motive force would otherwise be unchanged. D) most metabolic pathways for both anabolism and catabolism would have to be rewritten.
Which of the following terms does NOT belong with the other four?
a. Radiolaria b. Chlorarachniophyta c. Foraminifera d. Charophyta e. Rhizaria
Which of the following is an example of a B vitamin?
A. caffeine B. calcitrol C. malic acid D. taurine E. niacin
The ________ are the tubular structures that occur between the ovaries and the uterus
Fill in the blank(s) with correct word