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Microbial Metabolism

Microbial Metabolism
DAHP synthetase catalyzes the condensation of

phosphoenol pyruvate
phenylalanine
both (a) and (b)
erythrose-4-phosphate

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Microbial Metabolism
In the passive diffusion, solute molecules cross the membrane as a result of

pressure difference
all of these
concentration difference
ionic difference

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Microbial Metabolism
The glyoxylate cycle is used by some microorganisms when___________ is the sole carbon source.

acetate
all of these
nitrate
carbon dioxide

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Microbial Metabolism
If radioactive bicarbonate was supplied to bacterial cells, which were actively synthesizing fatty acids, it is expected to find the bulk of the radioactivity in

nucleic acids
the cytoplasmic membrane
cellular bicarbonate
the fatty acids

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Microbial Metabolism
Which of the following catalyze liberation of orthophosphate from organic P compounds and inorganic pyrophosphate ?

Oxidoreductase
Alkaline phosphates
Hydrogenase
Protease

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Microbial Metabolism
Which of the following does not produce oxygen as a product of photosynthesis?

Oak trees
Purple sulfur bacteria
Phytoplankton
Cyanobacteria

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