At which position in the ribose is an additional –OH present [with respect to Deoxyribose]?

1.1’2.2’
3.3’4.5’

Subtopic:  The DNA |
 77%
From NCERT
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Watson and Crick based their model of DNA on X-ray diffraction data produced by:

1. Hershey and Chase 2. Marie Curie and Pierre Curie
3. Franklin and Wilkins 4. Meselson and Stahl
Subtopic:  DNA Double Helix |
 88%
From NCERT
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In a transcription unit, with respect to structural genes, the promoter is located:

1. Upstream and 5’ 2. Upstream and 3’
3. Downstream and 5’ 3. Downstream and 3’

Subtopic:  Transcription: I |
 73%
From NCERT
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Which of the following codons has a dual role in the genetic code?

1. AUG 2. GUG
3. CUG 4. UUG
Subtopic:  Genetic Code: I | Genetic Code: II |
 94%
From NCERT
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DNA-dependent RNA polymerase catalyzes polymerization in:

1. Only in 3’ – 5’ direction
2. Only in 5’ – 3’ direction
3. In both directions
4. In neither directions

Subtopic:  Transcription |
 85%
From NCERT
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Frederick Griffith discovered:

1. DNA is the genetic material
2. RNA can be the genetic material
3. Streptococcus has two strains
4. Bacterial transformation

Subtopic:  Search for Genetic Material |
 79%
From NCERT
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In Avery, Macleod, and McCarty's experiment, the transformation of bacteria was inhibited by:

1. Proteases 2. RNase
3. DNAs 4. None of these

Subtopic:  Search for Genetic Material |
From NCERT
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If each strand of a dsDNA acts as a template for a new strand, the two daughter DNAs will be:

1. Complementary to each other
2. Identical to the parental DNA
3. Similar to each other
4. Complementary to the parental DNA

Subtopic:  DNA Double Helix |
From NCERT
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Which of the following is a pyrimidine base found in DNA?

1. Adenine 2. Guanine
3. Uracil 4. Cytosine

Subtopic:  The DNA |
 87%
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Which of the following is also called soluble RNA?

1. tRNA  2. rRNA
3. mRNA 4. siRNA
Subtopic:  Translation |
 78%
From NCERT
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