Self Studies

Molecular Basis...

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  • Question 1
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    The sequencing of the entire genome (the totality of all genes) of an organism was completed in 1996. The organism was

  • Question 2
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    Choose the correct answer from the alternatives given :
    An organism uses 20 amino acids while its DNA is made up of 6 types of nitrogenous bases. What would be the minimum size of a codon?

  • Question 3
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    Choose the correct answer from the alternatives given :
    In a DNA strand the nucleotides are linked together by

  • Question 4
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    Choose the correct answer from the alternatives given :
    The semi-conservative nature of DNA replication was established by Meselson and Stahl in their classic experiment with bacteria They grew bacteria in $$N^{15} \, - \, NH_4Cl$$ containing medium, washed and then incubated in fresh medium with $$N^{14}$$ - containing compounds and allowed to grow for three generations. $$C_5Cl$$ density gradient centrifugation of isolated DNA established the nature of semiconservative DNA Replication. The pictorial representation below shows the position of differentially labeled DNA in $$C_5Cl$$ density gradient. Had the DNA replication been conservative, what would have been the pattern?

  • Question 5
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    One of the following is true with respect to AUG

  • Question 6
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    Find the sequence of binding of the following amino acyl-tRNA complexes during translation of an mRNA transcribed by a DNA segment having the base sequence 3'TACATGGGTCCG5'. Choose the answer showing the correct order of alphabets.

  • Question 7
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    Which of the following biologists has been dubbed as the architect of molecular biology?

  • Question 8
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    Which of the following option shows correct matching of Column - I and Column - II.

    Column - IColumn - II
    (i) Degeneration codon(a) AUG
    (ii) Initiation codon(b) UAG
    (iii) Non - sense codons(c) AGU
    (iv) Anti codon (UCA)(d) AGA

  • Question 9
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    The toxin produced by the bacteria that is responsible for the development of diarrhea is produced by a section of DNA that has the code CCT TAT CAG. The sequence of amino acids produced by this sequence is ____________.

  • Question 10
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    Teminism is same as _____.

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