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Microbial Metabolism

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

Oak trees
Cyanobacteria
Phytoplankton
Purple sulfur bacteria

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Microbial Metabolism
Radioisotopes are frequently used in the study of cells. Assume a culture of E. coli is grown in a culture medium containing radioactive phosphorous. At the end of 48 hours, it is expected to find the radioactive label located in

phospholipids
enzymes
all of these
RNA

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Microbial Metabolism
In aerobic respiration, the terminal electron acceptor is

nitrate
nitrogen
hydrogen
oxygen

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Microbial Metabolism
Phosphate is considered to restrict the induction of

both (a) and (b)
primary metabolites
secondary metabolites
none of these

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Microbial Metabolism
High energy transfer compounds are capable of

transferring large amounts of free energy
accepting large amounts of free energy
measuring free energy
None of these

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Microbial Metabolism
In an oxygenic photosynthesis, the green and the purple bacteria do not use which of the following one as an electron source?

S (elemental sulphur)
H2
H2O
H2S

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