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Home Microbiology Enzyme Reaction Comments

  • Question
  • The ability of CTP to bind to aspartate carbamoyltransferase and shut down the synthesis of more CTP is an example of


  • Options
  • A. enzyme induction
  • B. enzyme repression
  • C. feedback inhibition of enzyme activity
  • D. none of these

  • Correct Answer
  • feedback inhibition of enzyme activity 


  • Enzyme Reaction problems


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    • 1. Adenosine triphosphate is a type of

    • Options
    • A. fatty acid
    • B. amino acid
    • C. nucleotide
    • D. steroid
    • Discuss
    • 2. Denaturation of an enzyme refers to the

    • Options
    • A. improper arrangement of the enzyme in a metabolic pathway
    • B. loss of the enzymes proper shape
    • C. formation of the enzymes proper shape
    • D. formation of a new isozyme for that enzyme
    • Discuss
    • 3. To a living organism, which of the following has the greatest amount of available energy per molecule?

    • Options
    • A. ATP
    • B. ADP
    • C. AMP
    • D. H2O
    • Discuss
    • 4. An exergonic reaction is one that

    • Options
    • A. requires energy to proceed
    • B. releases energy for work
    • C. gives off much heat
    • D. looses energy
    • Discuss
    • 5. An endergonic reaction is one that

    • Options
    • A. requires energy in order to proceed
    • B. releases energy for work
    • C. gives off much heat
    • D. looses energy
    • Discuss
    • 6. Glucose can be broken down to pyruvate by

    • Options
    • A. Entner-Doudoroff pathway
    • B. tricarboxylic acid cycle
    • C. both (a) and (b)
    • D. none of these
    • Discuss
    • 7. The amount of ATP produced by a cell from glucose when metabolizing it by fermentation means is

    • Options
    • A. greater than by aerobic metabolism
    • B. lesser than by aerobic metabolism
    • C. exactly or approximately equal to by aerobic metabolism
    • D. none of these
    • Discuss
    • 8. How many oxygen molecules are required in the fermentation of one molecule of glucose to ethanol and CO2?

    • Options
    • A. 0 
    • B. 1
    • C. 2
    • D. 36
    • Discuss
    • 9. In lactic acid fermentation, the final electron acceptor would be

    • Options
    • A. fructose
    • B. pyruvate
    • C. glucose
    • D. acetyl-CoA
    • Discuss
    • 10. In anaerobic respiration, the final electron acceptor can be

    • Options
    • A. oxygen
    • B. nitrate
    • C. pyruvate
    • D. acetyl-CoA
    • Discuss


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