In 125 amino acids, sequence of the codon for 25th amino acid is mutated to UAA, then

(1)A polypeptide of 24 amino acids is formed

(2) A polypeptide of 124 amino acids is formed

(3) A polypeptide of 25 amino acids is formed

(4) No polypeptides are formed

Subtopic:  Translation | Translation Mechanism |
 81%
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If length of DNA is 1.36 mm , the number of base pair and nucleosomes in it will be

(1)4×10^12 and 2×10^4

(2)4×10^6 and 2×10^10

(3)4×10^6 and 2×10^4

(4) 4×10^6 and 2×10^12

Subtopic:  Solved Problems |
 63%
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If a codon consists of 3 bases and there are 5 different nitrogenous bases altogether. How many codons will be there?

(1)61

(2)125

(3)27

(4)64

Subtopic:  Genetic Code: I | Genetic Code |
 68%
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If a DNA have 5000 bases , and amount of adenine is 15% then find out the number of nucleotide of guanine

(1)1750

(2)3500

(3)7000

(4)975

Subtopic:  The DNA |
 74%
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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 |
 90%
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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%
From NCERT
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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%
From NCERT
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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%
From NCERT
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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%
From NCERT
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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%
From NCERT
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