Zoology - Molecular Genetics One Mark Question

12th Standard EM

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Biology

Time : 00:30:00 Hrs
Total Marks : 20
    10 x 1 = 10
  1. Hershey and Chase experiment with bacteriophage showed that

    (a)

    Protein gets into the bacterial cells

    (b)

    DNA is the genetic material

    (c)

    DNA contains radioactive sulphur

    (d)

    Viruses undergo transformation

  2. DNA and RNA are similar with respect to

    (a)

    Thymine as a nitrogen base

    (b)

    A single-stranded helix shape

    (c)

    Nucleotide containing sugars, nitrogen bases and phosphates

    (d)

    The same sequence of nucleotides for the amino acid phenyl alanine

  3. What is the basis for the difference in the synthesis of the leading and lagging strand of DNA molecules?

    (a)

    Origin of replication occurs only at the 5' end of the molecules

    (b)

    DNA ligase works only in the 3' → 5' direction

    (c)

    DNA polymerase can join new nucleotides only to the 3' end of the growing stand.

    (d)

    Helicases and single-strand binding proteins that work at the 5' end

  4. Chromosomes were first observed by ________.

    (a)

    Miescher

    (b)

    Hofmeister

    (c)

    Avery

    (d)

    Griffith

  5. The term nucleic acid was coined by ________.

    (a)

    Miescher

    (b)

    Hofmeister

    (c)

    Altman

    (d)

    Mcleod

  6. Griffith's experiments proved that _________.

    (a)

    RNA is involved in protein synthesis

    (b)

    Bacteria undergoes asexual reproduction

    (c)

    DNA is the genetic material

    (d)

    DNA is made of two strands

  7. The experiment conducted by Griffith was based on_________.

    (a)

    Transduction

    (b)

    Replication

    (c)

    Transformation

    (d)

    Conjucation

  8. Human Genome was sequenced in ________.

    (a)

    1979

    (b)

    2015

    (c)

    1989

    (d)

    2001

  9. ___________ used radioactive labelled molecules to prove that DNA is the genetic material.

    (a)

    Hershey and Chase

    (b)

    Wilkins and Franklin

    (c)

    Griffith

    (d)

    Mcleod and Avery

  10. One difference between deoxyribose and Ribose is due to________.

    (a)

    One Oxygen atom more in Ribose

    (b)

    Two Oxygen atoms less in Deoxyribose

    (c)

    Two Carbon atoms less in Ribose

    (d)

    Four Carbon atoms more in Ribose

  11. 5 x 1 = 5
  12. Retroviruses possess __________ as genetic material.

    ()

    RNA

  13. Goldberg - Hogness box of eukaryotes is equivalent to__________ of prokaryotes.

    ()

    Pribnow box

  14. Approximate count of base pair in human genome is _________

    ()

    3 x 109 bp

  15. Specific sequences of mRNA that are not translated are _____________

    ()

    UnTranslated Regions (UTR)

  16. _____________ is the monomer of DNA.

    ()

    Nucleotide

  17. 5 x 1 = 5
  18. PCR

  19. (1)

    Genetic markers

  20. SNPs

  21. (2)

    Polycistronic gene

  22. Lac Operon

  23. (3)

    DNA amplification

  24. VNTR

  25. (4)

    GTP

  26. Initiation complex

  27. (5)

    Snips

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