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  • Question
  • Phosphate deregulated mutants are


  • Options
  • A. less sensitive to phosphate regulation
  • B. moderately sensitive to phosphate regulation
  • C. highly sensitive to phosphate regulation
  • D. none of these

  • Correct Answer
  • less sensitive to phosphate regulation 


  • Microbial Metabolism problems


    Search Results


    • 1. 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
    • 2. 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
    • 3. 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
    • 4. Entner - Doudoroff pathway is not found in

    • Options
    • A. aerobic prokaryotes
    • B. anaerobic prokaryotes
    • C. Both (a) and (b)
    • D. eukaryotes
    • Discuss
    • 5. 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
    • 6. In order to get inorganic phosphorous into organic compounds, the phosphate ion is incorporated via

    • Options
    • A. substrate level phosphorylation
    • B. oxidative phosphorylation
    • C. both (a) and (b)
    • D. DNA
    • Discuss
    • 7. 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

    • Options
    • A. enzymes
    • B. RNA
    • C. phospholipids
    • D. all of these
    • Discuss
    • 8. When acetate is the sole source of carbon for some microorganisms, the cycle which is used, is called

    • Options
    • A. pentose phosphate pathway
    • B. glycolyic pathway
    • C. glyoxylate pathway
    • D. oxaloacetate pathway
    • Discuss
    • 9. Entner-Doudoroff pathway is found in

    • Options
    • A. aerobic prokaryotes
    • B. anaerobic prokaryotes
    • C. both (a) and (b)
    • D. aerobic eukaryotes
    • Discuss
    • 10. Hexose monophosphate pathway is also known as

    • Options
    • A. phosphogluconate pathway
    • B. oxaloacetate pathway
    • C. malate pathway
    • D. fumerate pathway
    • Discuss


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