A codon consists of three nitrogenous bases and there are four kind of bases in nucleic acid altogether. How many codons will be there?

(1)60

(2)43

(3)34

(4)46

Subtopic:  Genetic Code: I | Genetic Code |
 91%
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The main enzyme for DNA replication is

(1)DNA-dependent RNA polymerase

(2) RNA-dependent DNA polymerase

(3) DNA-dependent DNA polymerase

(4) RNA-dependent RNA polymerase

Subtopic:  DNA Replication: II | DNA Replication |
 81%
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The energy for the DNA replication comes from

(1)Deoxyribonucleosides triphosphates

(2) Deoxyribonucleotides triphosphates

(3) Deoxyribonucleosides

(4) phosphorylation of ATP

Subtopic:  DNA Replication: II | DNA Replication |
 66%
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Which of the following is incorrect for DNA polymerase?

1. template dependent enzyme

2. highly efficient enzyme

3. high degree of accuracy

4. template independent enzyme

Subtopic:  DNA Replication: II | DNA Replication |
 79%
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which of the following purposes are not served by Deoxyribonucleoside triphosphates

(1) act as substrate

(2)act as energy source for replication

(3)act as enzyme cofactors

(4)act same as ATP

Subtopic:  DNA Replication: II | DNA Replication:III | DNA Replication |
 80%
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The small opening of the DNA helix where replication occurs is known as

(1)replication centre

(2)replication opening

(3)replication fork

(4)duplication fork

Subtopic:  DNA Replication:III | DNA Replication |
 94%
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The template of DNA on which discontinuous replication occurs has polarity

(1)5’to 3’

(2)3’ to 5’

(3)both a and b

(4)None of these

Subtopic:  DNA Replication:III | DNA Replication |
 70%
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The discontinuously synthesised fragments are joined later by

(1)DNA polymerase III

(2)DNA ligase

(3)DNA gyrase

(4)DNA polymerase I

Subtopic:  DNA Replication:III | DNA Replication |
 95%
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In eukaryotes, the replication of DNA takes place

(1) at S-phase of the cell cycle

(2)before G2 and after G1phase of the cell cycle

(3) at M phase

(4)Both a and b

Subtopic:  DNA Replication: I | DNA Replication |
 60%
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If cell division wouldn't occur after DNA replication then the cell will have

(1) chromosomal aberration

(2) polyploidy

(3) chromosomal anomaly

(4) Both b and c

Subtopic:  DNA Replication:III |
 70%
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