Chapter 5: Molecular Basis of Inheritance MCQs | biology Class 12 CBSE

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Chapter 5: Molecular Basis of Inheritance MCQs | biology Class 12 CBSE | ByteNotes.in

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Question 1

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The genetic material of bacteriophage φX174 consists of how many nucleotides?

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Question 2

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Which of the following pairs of nitrogenous bases is present only in DNA and not in RNA?

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Question 3

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The backbone of the polynucleotide chain is formed by:

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Question 4

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The number of hydrogen bonds between Guanine and Cytosine in DNA is:

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Question 5

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Who first identified DNA as an acidic substance in the nucleus and named it 'Nuclein'?

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Question 6

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In the double helix model of DNA, the pitch of the helix is:

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Question 7

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The number of base pairs present in one complete turn of the DNA double helix is:

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Question 8

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Histones are rich in which of the following basic amino acids?

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Question 9

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A typical nucleosome contains approximately how many base pairs of DNA?

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Question 10

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In Griffith's experiment, which of the following observations led him to propose the 'transforming principle'?

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Question 11

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In the Hershey–Chase experiment, radioactive 35S was used to label:

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Question 12

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Which enzyme, when used to treat the S-strain extract, inhibited transformation in Avery, MacLeod and McCarty's experiment?

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Question 13

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During Meselson and Stahl's experiment, which technique was used to separate DNA of different densities?

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Question 14

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After two generations in Meselson and Stahl's experiment (transfer to 14N medium), the DNA bands appear as:

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Question 15

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The enzyme that joins Okazaki fragments during DNA replication is:

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Question 16

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On which strand of DNA does continuous synthesis occur during replication?

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Question 17

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The template strand in a transcription unit has a polarity of:

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Question 18

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Which RNA polymerase in eukaryotes is responsible for transcribing the precursor of mRNA (hnRNA)?

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Question 19

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During post-transcriptional processing in eukaryotes, which of the following is added to the 5'-end of hnRNA?

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Question 20

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Splicing refers to the process of:

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Chapter 5: Molecular Basis of Inheritance | MCQs

The genetic material of bacteriophage φX174 consists of how many nucleotides?

Which of the following pairs of nitrogenous bases is present only in DNA and not in RNA?

The backbone of the polynucleotide chain is formed by:

The number of hydrogen bonds between Guanine and Cytosine in DNA is:

Who first identified DNA as an acidic substance in the nucleus and named it 'Nuclein'?

In the double helix model of DNA, the pitch of the helix is:

The number of base pairs present in one complete turn of the DNA double helix is:

Histones are rich in which of the following basic amino acids?

A typical nucleosome contains approximately how many base pairs of DNA?

In Griffith's experiment, which of the following observations led him to propose the 'transforming principle'?

In the Hershey–Chase experiment, radioactive 35S was used to label:

Which enzyme, when used to treat the S-strain extract, inhibited transformation in Avery, MacLeod and McCarty's experiment?

During Meselson and Stahl's experiment, which technique was used to separate DNA of different densities?

After two generations in Meselson and Stahl's experiment (transfer to 14N medium), the DNA bands appear as:

The enzyme that joins Okazaki fragments during DNA replication is:

On which strand of DNA does continuous synthesis occur during replication?

The template strand in a transcription unit has a polarity of:

Which RNA polymerase in eukaryotes is responsible for transcribing the precursor of mRNA (hnRNA)?

During post-transcriptional processing in eukaryotes, which of the following is added to the 5'-end of hnRNA?

Splicing refers to the process of:

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