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Microbial Metabolism problems


  • 1. The reaction, where small precursor molecules are assembled into larger organic molecules is referred as

  • Options
  • A. anabolism
  • B. catabolism
  • C. metabolism
  • D. any of these
  • Discuss
  • 2. The phosphate inhibition in the clavine formation with Claviceps SD58, can be counteracted by the addition of

  • Options
  • A. alanine
  • B. methionine
  • C. tryptophan
  • D. lysine
  • Discuss
  • 3. In establishing proton gradient for chemiosmotic ATP generation by aerobic respiration the terminal electron acceptor is

  • Options
  • A. nitrate
  • B. oxygen
  • C. sulfate
  • D. CO2
  • Discuss
  • 4. In an oxygenic photosynthesis, the green and the purple bacteria do not use which of the following one as an electron source?

  • Options
  • A. H2O
  • B. H2
  • C. H2S
  • D. S (elemental sulphur)
  • Discuss
  • 5. Which of the following does not produce oxygen as a product of photosynthesis?

  • Options
  • A. Oak trees
  • B. Purple sulfur bacteria
  • C. Cyanobacteria
  • D. Phytoplankton
  • Discuss
  • 6. Standard free energy change (?G) can be expressed as

  • Options
  • A. ?G° = -RTlnkeq
  • B. ?G° = RTlnkeq
  • C. ?G° = R/Tlnkeq
  • D. ?G° = -RT/lnkeq
  • Discuss
  • 7. Entner - Doudoroff pathway is not found in

  • Options
  • A. aerobic prokaryotes
  • B. anaerobic prokaryotes
  • C. Both (a) and (b)
  • D. eukaryotes
  • Discuss
  • 8. High energy transfer compounds are capable of

  • Options
  • A. accepting large amounts of free energy
  • B. transferring large amounts of free energy
  • C. measuring free energy
  • D. none of the above
  • Discuss
  • 9. The role of bacteriophyll in an oxygenic photosynthesis is to

  • Options
  • A. reduce ferridoxin directly
  • B. reduce NADP directly
  • C. use light energy to energize an electron
  • D. transfer electrons to an intermediate in the sulfide oxidation pathway
  • Discuss
  • 10. The acquisition energy by glucose fermentation requires

  • Options
  • A. substrate-level phosphorylation
  • B. electron transport of electrons from NADH
  • C. long-chain fatty acid oxidation
  • D. the enzyme formic-hydrogen lyase
  • Discuss

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