The couplings between base units of DNA is through :
1. | Hydrogen bonding | 2. | Electrostatic bonding |
3. | Covalent bonding | 4. | Van der waal's forces |
The segment of DNA which acts as the instrumental manual for the synthesis of the protein is
1. nucleotide
2. ribose
3. gene
4. nucleoside
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
The number of molecules of ATP produced in the lipid metabolism of a molecule of
palmitic acid is
1. 130
2. 36
3. 56
4. 86
How many moles of acetic anhydride (Ac2O) is needed to react completely with tartaric acid, ribose, and glucose respectively?
(1) 2,4, 5
(2) 2, 3, 4
(3) 4, 5, 6
(4) 4, 5, 5
The complementary base of adenine in one strand to that in the other strand of DNA is:
1. Cytosine
2. Guanine
3. Uracil
4. Thymine
The function of DNA is:
1. | To synthesize RNA. |
2. | To synthesize the necessary proteins. |
3. | To carry the hereditary characteristics from generation to generation. |
4. | All of the above. |
In both DNA and RNA heterocyclic base and phosphate ester linkages are at:
1. \(C^1_5\) and \(C^1_2\) respectively of the sugar molecule.
2. \(C^1_2\) and \(C^1_5\) respectively of the sugar molecule.
3. \(C^1_1\) and \(C^1_5\) respectively of the sugar molecule.
4. \(C^1_5\) and \(C^1_1\) respectively of the sugar molecule.
The central dogma of molecular genetics states that the genetic information flows from
(1) amino acids proteins DNA
(2) DNA carbohydrates proteins
(3) DNA RNA proteins
(4) DNA RNA carbohydrates
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. |