Many of the antibiotics and other pharmaceutical agents isolated from Streptomyces species are
A) amides.
B) polyketides.
C) thioesters.
D) fatty acids.
E) lipids.
Correct Answer:
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Q19: The Calvin cycle is essentially
A) started by
Q20: How many turns of the Calvin cycle
Q21: Which of the following is NOT correct
Q22: In the reductive TCA cycle, four or
Q23: Biological nitrogen fixation is energetically expensive. Assuming
Q25: Denitrification is the
A) conversion of nitrate or
Q26: The most ancient CO₂ fixation pathway in
Q27: The cell diagrammed below provides an
Q28: What kind of reaction is the formation
Q29: In the mechanism of nitrogen reduction, _
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