Nucleic acids are polymers of:

1. Nucleosides 2. Nucleotides
3. Amino acids 4. Polypeptides

Subtopic:  The DNA |
 90%
From NCERT
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In prokaryotes:

1. A typical nucleus is not seen and DNA is scattered throughout the cell
2. A typical nucleus may sometimes be present and DNA is scattered throughout a cell
3. A typical nucleus is not seen but DNA is not scattered throughout the cell
4. A typical nucleus may sometimes be present but DNA is not scattered throughout the cell

Subtopic:  The DNA |
 65%
From NCERT
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Transcriptionally, active chromatin is termed as:

1. Heterochromatin 2. Euchromatin
3. Prechromatin 4. Prochromatin

Subtopic:  DNA Packaging |
 91%
From NCERT
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The protein synthesizing machinery of a cell has evolved around:

1. DNA 2. RNA
3. Protein itself 4. Viroids
Subtopic:  DNA vs RNA as Genetic Material |
 89%
From NCERT
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Viruses grown on radioactive sulfur contain:

1. Radioactive proteins but not DNA
2. Radioactive DNA but not proteins
3. Radioactive proteins and DNA
4. Nonradioactive DNA and protein

Subtopic:  Search for Genetic Material |
 86%
From NCERT
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In a strand of nucleic acid, two nucleotides are linked together by:
1. 3’ – 5’ phosphodiester bond
2. 5’ – 3’ phosphodiester bond
3. 2’ – 5’ phosphodiester bond
4. 3’ – 1’ phosphodiester bond

Subtopic:  The DNA |
 72%
From NCERT
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The daughter DNA that was extracted from the culture one generation after the transfer from 15N to 14N medium had:

1. Low density
2. Intermediate density
3. High density
4. One had low and another had high density

Subtopic:  DNA Replication |
 76%
From NCERT
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A failure in cell division after DNA replication results in:

1. Point mutation 2. Aneuploidy
3. Polyploidy 4. Apoptosis

Subtopic:  DNA Replication |
 80%
From NCERT
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What is another name for thymine?

1.5 – bromouracil2.3 – bromouracil
3.3 – methyl uracil4.5 – methyl uracil

Subtopic:  The DNA |
 84%
From NCERT
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In Griffith's experiment, which of the following bacterial strains was capable of causing pneumonia in mice?

1. Live R
2. Bacteria strain with polysaccharide coat
3. Heat Killed S
4. Live R with capsule and Heat Killed S

Subtopic:  Search for Genetic Material |
From NCERT
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