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Molecular Basis...

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  • Question 1
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    Which of the following option shows a correctly labeled region in the given diagram of DNA replication?

  • Question 2
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    A bacterium with completely non-radioactive DNA was allowed to replicate in radioactive medium for three generation what $$ \%$$ of the bacteria should contain radioactive DNA:

  • Question 3
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    Consider the following codons:
    1. UAA          

    2. UAC
    3. UAG      
    Which of these are considered to be the termination codons codons in protein synthesis?

  • Question 4
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    Match List I(Enzyme) with List II(Function) and select the correct answer using the codes given the lists.

    List-IList-II
    a. DNA Ligase$$1$$. Catalyses the covalent union of segments of an interrupted sugarphosphate strand in double-stranded DNA
    b. DNA polymerase$$2$$. End nuclease that digests either single stranded or double stranded DNA
    c. DNase I$$3$$. Produces single or double stranded breaks in DNA during replication to release tension brought about by the separation of double strands
    d. DNA topoisomerase$$4$$. Catalyses the formation of DNA worn deoxyribonucleotides using one strand of DNA as template

  • Question 5
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    Replication of DNA on its lagging strand is initiated by.

  • Question 6
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    The number of ribosomal binding sites used by tRNAs during protein elongation are ______________.

  • Question 7
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    The distance between two nitrogen bases in a polynucleotide of DNA is?

  • Question 8
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    A genetic engineer wishes to construct a shuffle vector for his experiments. What essential requirements should it possess to integrate with the host systems?

  • Question 9
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    Which one of the following is a terminator codon?

  • Question 10
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    Consider the following statements.
    The genetic code is said to be degenerate and universal which means that.
    a. Amino acids may have more than one codon.
    b. All Amino acids have the one codon.
    c. Codons are common for higher and lower organisms.
    Of these statements.

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