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Home Microbiology Nucleic Acid Structure Comments

  • Question
  • Which is not an essential part of a two-component phosphorelay system?


  • Options
  • A. Response regulator
  • B. Sensor kinase
  • C. Autoinducer
  • D. None of these

  • Correct Answer
  • Autoinducer 


  • Nucleic Acid Structure problems


    Search Results


    • 1. In DNA sequencing, the primer

    • Options
    • A. specifies where the sequence ends
    • B. specifies where the sequence begins
    • C. both (a) and (b)
    • D. generates variety of different sized fragments
    • Discuss
    • 2. To which of the following adenine always binds?

    • Options
    • A. Guanine
    • B. Cytosine
    • C. Thymine
    • D. None of these
    • Discuss
    • 3. In which of the following uracil is present?

    • Options
    • A. RNA
    • B. DNA
    • C. Both (a) and (b)
    • D. None of these
    • Discuss
    • 4. The chromosome of almost all bacteria is in the shape of

    • Options
    • A. an open circle
    • B. helix
    • C. a closed circle
    • D. a linear chromosome
    • Discuss
    • 5. Stem and loop structures are

    • Options
    • A. proteins that help partially denatured enzymes to recover their native configuration
    • B. structures in DNA caused by inverted repeats
    • C. structures at the ends of linear eukaryotic DNA molecules
    • D. the bonds between adjacent DNA nucleotides in the same strand
    • Discuss
    • 6. The function of ribosomes within the cell is

    • Options
    • A. to produce ATP
    • B. to ferment carbohydrates
    • C. to synthesize proteins
    • D. all of these
    • Discuss
    • 7. The DNA that actually codes for a protein's primary structure in eukaryotes is

    • Options
    • A. the entire gene
    • B. portions of the gene called introns
    • C. portions of the gene called exons
    • D. the promoter
    • Discuss
    • 8. RNA that is complementary to a segment of another RNA molecule to which it will bind is known as

    • Options
    • A. missense RNA
    • B. antisense RNA
    • C. nonsense RNA
    • D. none of these
    • Discuss
    • 9. Which of the following enzyme(s) is/are required for lactose fermentation?

    • Options
    • A. Transacetylase
    • B. ?-galactosidase
    • C. Galactoside permease
    • D. All of these
    • Discuss
    • 10. Which eukaryotic RNA polymerase makes tRNA's?

    • Options
    • A. RNA polymerase 1
    • B. RNA polymerase 2
    • C. RNA polymerase 3
    • D. Any of these
    • Discuss


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