The correct option about the presence of  H-bond in nucleotides is: 

1. A-T, G-C

2. A-G, T-C

3. G-T, A-C

4. A-A, T-T

Subtopic:   DNA, RNA & Metal Ions |
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The couplings between base units of DNA is through : 

1. Hydrogen bonding 2. Electrostatic bonding
3. Covalent bonding 4. Van der waal's forces
Subtopic:   DNA, RNA & Metal Ions |
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The correct statement regarding RNA and DNA, respectively is:

1. The sugar component in RNA is ribose and the sugar component in DNA is 2'- deoxyribose.
2. The sugar component in RNA is arabinose and the sugar component in DNA is ribose.
3. The sugar component in RNA is 2'-deoxyribose and the sugar component in DNA is arabinose.
4. The sugar component in RNA is arabinose and the sugar component in DNA is 2'- deoxyribose.
Subtopic:   DNA, RNA & Metal Ions |
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Nucleic acids are the polymers of : 
1. Nucleosides
2. Nucleotides
3. Bases
4. Sugars

Subtopic:   DNA, RNA & Metal Ions |
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Carbon atoms of pentose sugars of nucleotides having phosphodiester linkage are:
1. 5' and 3'
2. 2' and 5'
3. 5' and 5'
4. '3 and 3'

Subtopic:   DNA, RNA & Metal Ions |
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The incorrect statement about nucleic acid is:

1. It is responsible for heredity.
2. It is responsible for protein synthesis in a cell.
3. It is a constituent of the chromosome.
4. It is responsible for the transmission of chemical signals.
Subtopic:   DNA, RNA & Metal Ions |
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