Sulfate-reducing bacteria are a ________ that are found in ________ environments
A) monophyletic group / anoxic
B) polyphyletic group / oxic
C) morphologically distinct group / anoxic
D) morphologically distinct group / oxic
Answer: A
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Starting with a single piece of dsDNA, after 3 PCR cycles there are
A. 2 additional pieces of dsDNA. B. 4 additional pieces of dsDNA. C. 8 additional pieces of dsDNA. D. 16 additional pieces of dsDNA.
Fishery effort combined with catch data is used to
a. determine if a fishery is in jeopardy. b. determine the pay rate for fishers. c. determine the economic value of a fishery. d. estimate the ocean's productivity.
Why is it important that DNA replication be so accurate but not perfect?
What will be an ideal response?
Simple diffusion and facilitated diffusion are related in that both
(A) require protein carriers (B) depend on a concentration gradient (C) occur via contractions of cytoskeletal elements attached to membrane proteins (D) are endergonic processes and thus require the hydrolysis of ATP (E) occur in eukaryotic cells but not in prokaryotic cells