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Microbial Metabolism

Microbial Metabolism
Which of the following is responsible for phosphate solubilization?

Bacillus
Streptococcus
Streptomyces
Clostridium

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Microbial Metabolism
If ΔG of a chemical reaction has a negative value, the reaction

none of these
releases energy
both (a) and (b)
requires energy

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Microbial Metabolism
Which of the following groups contain(s) many unique coenzymes, such as coenzyme M and coenzyme F420?

Sulfate-reducing bacteria
Acetogens (acetigens; acetate-producing microbes)
Methanogens (methane-producing microbes)
Methanotrophs (methane-oxidizing microbes)

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

Oak trees
Cyanobacteria
Purple sulfur bacteria
Phytoplankton

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Microbial Metabolism
The role of bacteriophyll in an oxygenic photosynthesis is to

reduce NADP directly
use light energy to energize an electron
reduce ferridoxin directly
transfer electrons to an intermediate in the sulfide oxidation pathway

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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 sulphur. At the end of 48 hours, it is expected to find the radioactive label located in

enzymes
all of these
DNA
RNA

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