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Home Microbiology Enzymes Regulation See What Others Are Saying!
  • Question
  • Organic molecules that increase the rate of metabolic reactions with themselves changing are known as


  • Options
  • A. coenzymes
  • B. enzymes
  • C. substrates
  • D. reactants

  • Correct Answer
  • enzymes 


  • More questions

    • 1. Which is most likely to be exposed on the surface of a gram-negative bacterium?

    • Options
    • A. Pore protein (porin)
    • B. Protein involved in energy generation
    • C. Lipoteichoic acid
    • D. Phospholipids
    • Discuss
    • 2. All of the following are features of prokaryotes except

    • Options
    • A. nitrogen fixation
    • B. photosynthesis
    • C. sexual reproduction
    • D. locomotion
    • Discuss
    • 3. High acid foods with a pH above 5.3 are especially subjected to

    • Options
    • A. flat sour spoilage
    • B. putrefaction
    • C. both (a) and (b)
    • D. TA spoilage
    • Discuss
    • 4. The binomial name of a microbe is composed of

    • Options
    • A. its kingdom and genus names
    • B. its genus name and a species modifier
    • C. its family and class names
    • D. its genus and species names
    • Discuss
    • 5. Induction of tolerance mechanism(s) is/are

    • Options
    • A. suppression
    • B. clonal deletion
    • C. clonal anergy
    • D. all of these
    • Discuss
    • 6. Why high concentration of sugars are not employed in the fermentation medium?

    • Options
    • A. Calcium lactate is not produced
    • B. Calcium lactate crystallizes from the medium and slows down the process of fermentation
    • C. High sugar concentration itself crystallizes
    • D. None of the above
    • Discuss
    • 7. A cluster of polar flagella is called

    • Options
    • A. lophotrichous
    • B. amphitrichous
    • C. monotrichous
    • D. petritrichous
    • Discuss
    • 8. Which of the following chemotherapeutic agents may affect the growth of Campylobacter jejuni?

    • Options
    • A. Vacomycin
    • B. Polymyxin
    • C. Trimethoprim
    • D. None of these
    • Discuss
    • 9. T-even phage binding to E. coli probably involves

    • Options
    • A. electrostatic interaction
    • B. hydrophobic interaction
    • C. covalent bonds
    • D. all of these
    • Discuss
    • 10. Genetic variations are

    • Options
    • A. temporary
    • B. influenced by the environment
    • C. stable
    • D. not heritable
    • Discuss


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