For the biogeochemical cycles of the following elements, which does NOT have an atmospheric cycle?
A) carbon
B) phosphorus
C) sulfur
D) nitrogen
B
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The photosystem channels the excitation energy gathered by absorption of light by any one of the pigment molecules to a specific reaction center chlorophyll, which in turn passes the energy to
A. photosystem I. B. photosystem II. C. the primary electron acceptor. D. the secondary electron center. E. cytochrome.
Comparing the body structures of organisms to find evidence of a shared evolutionary history is called ________.
A. analogous reconstruction B. comparative anatomy C. physiology D. outgrouping
What are the chances that a woman who is color blind will have a son who is color blind?
A. 0 percent D. 75 percent B. 25 percent E. 100 percent C. 50 percent
Why is pH stability important for homeostasis?