Tag: molecular biology

Questions Related to molecular biology

1.7 m double helical DNA will have base pairs

structure of dna and rna nucleic acids and polynucleotides nucleic acids and protein synthesis molecular biology biology

  1. 3.4 x $10^9$

  2. 5 x $10^9$

  3. 1.7 x $10^9$

  4. 1.7 x $10^5$

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Correct Option: B

Crick, one of the discoverer of DNA double helix was man of

structure of dna and rna nucleic acids and polynucleotides nucleic acids and protein synthesis molecular biology biology

  1. Botany

  2. Physics

  3. Chemistry

  4. Zoology

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Correct Option: B

In double helix model of DNA, how far is each base pair from the next base pair

structure of dna and rna nucleic acids and polynucleotides nucleic acids and protein synthesis molecular biology biology

  1. 3.4 nm

  2. 0.34 nm

  3. 2.0 nm

  4. 34 nm

  5. 0.034 nm

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Correct Option: B

The pitch angle of deflection between two successive base pairs in DNA double helix is

structure of dna and rna nucleic acids and polynucleotides nucleic acids and protein synthesis molecular biology biology

  1. $20^0$

  2. $34^0$

  3. $36^0$

  4. $360^0$

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Correct Option: C

Which of the following is correctly matched

structure of dna and rna nucleic acids and polynucleotides nucleic acids and protein synthesis molecular biology biology

  1. UAC-Tyrosine

  2. UCG-Start

  3. UUU-Stop

  4. UGULeucine

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Correct Option: A

Initiation of DNA strand synthesis is performed by

structure of dna and rna nucleic acids and polynucleotides nucleic acids and protein synthesis molecular biology biology

  1. DNA polymerase I

  2. DNA helicase

  3. DNA primase

  4. DNA topoisomerase

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Correct Option: C

Which of the following pairs are correctly matched

structure of dna and rna nucleic acids and polynucleotides nucleic acids and protein synthesis molecular biology biology

  1. Adenine-Thymine

  2. Thymine-Uracil

  3. Uracil-Cytosine

  4. Guanine-Adenine

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Correct Option: A

A DNA double helix is 340 nm long. Number of nucleotides found in it is

structure of dna and rna nucleic acids and polynucleotides nucleic acids and protein synthesis molecular biology biology

  1. 20

  2. 200

  3. 1000

  4. 2000

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Correct Option: D

In double helix of DNA, there are sugar phosphate backbones with bases projected

structure of dna and rna nucleic acids and polynucleotides nucleic acids and protein synthesis molecular biology biology

  1. Outwardly

  2. Outwardly and inwardly

  3. Inwardly

  4. Interpolated

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Correct Option: C

The enzyme which helps to cut one strand of DNA duplex to release tension of coiling of two strands is

structure of dna and rna nucleic acids and polynucleotides nucleic acids and protein synthesis molecular biology biology

  1. DNA ligase

  2. DNA polymerase I

  3. Topoisomerase

  4. Helicase

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Correct Option: C