logo

CuriousTab

CuriousTab

Discussion


Home Biochemistry Protein and Nucleic Acid Interactions See What Others Are Saying!
  • Question
  • Which of the following amino acids interact with the DNA or RNA backbone (i.e. phosphate)?


  • Options
  • A. Ile and Val
  • B. Lys and Arg
  • C. Leu and Ala
  • D. Cys and Met

  • Correct Answer
  • Lys and Arg 


  • More questions

    • 1. In the study of one experiment it was found that the value of Tm for DNA is = 40° C. If the cell has 20% GC at the above Tm, then what will be value of 'Tm' if the GC% increases to 60%?

    • Options
    • A. Remains same
    • B. Increases
    • C. Decreases
    • D. Can not be compared
    • Discuss
    • 2. The primary reason for AIDS, a deadly disease is that it

    • Options
    • A. is caused by a virus
    • B. is caused by a bacterium
    • C. destroys key components of the body's internal defense system
    • D. causes a breakdown of the body's inflammatory response
    • Discuss
    • 3. What is the main damaging effect of UV radiation on DNA?

    • Options
    • A. Depurination
    • B. Formation of thymine dimers
    • C. Single strand break
    • D. Dehydration
    • Discuss
    • 4. Which of the following is required as a component of blood hemoglobin?

    • Options
    • A. Iron
    • B. Magnesium
    • C. Calcium
    • D. Copper
    • Discuss
    • 5. Translation in prokaryotes begins by the formation of a 30S initiation complex between the

    • Options
    • A. 30S ribosomal subunit, mRNA, initiation factors and N-fMet tRNA
    • B. 30S ribosomal subunit, tRNA and initiation factors
    • C. 30S ribosomal subunit and mRNA only
    • D. 30S ribosomal subunit, mRNA and initiation factors
    • Discuss
    • 6. What is the approximate percentage of repetitive DNA sequences in human DNA?

    • Options
    • A. 10 to 20%
    • B. 20 to 30%
    • C. 30 to 40%
    • D. 40 to 50%
    • Discuss
    • 7. In eukaryotes fatty acid breakdown occurs in

    • Options
    • A. mitochondrial matrix
    • B. cytosol
    • C. cell membrane
    • D. endoplasmic reticulum
    • Discuss
    • 8. A deficiency of niacin causes

    • Options
    • A. pellagra
    • B. scurvy
    • C. cataract
    • D. anemia
    • Discuss
    • 9. An intermediate which inhibits the activity of fructose 1,6 diphos-phatase would inhibit

    • Options
    • A. glycolysis
    • B. pyrolysis
    • C. gluconeogenesis
    • D. none of these
    • Discuss
    • 10. The lac operon is transcribed in which segments?

    • Options
    • A. 1
    • B. 2
    • C. 3
    • D. 4
    • Discuss


    Comments

    There are no comments.

Enter a new Comment