The couplings between base units of DNA is through : 

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:

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 $\to$ proteins $\to$ DNA

(2) DNA $\to$ carbohydrates $\to$ proteins

(3) DNA $\to$ RNA $\to$ proteins

(4) DNA $\to$ RNA $\to$ carbohydrates

The correct statement regarding RNA and DNA, respectively is: