The nitrogenous bases of the two  strands of DNA are joined by 

1.	Phosphodiester bond	2.	Hydrogen bond
3.	Glycosidic bond	4.	Peotide bond

The double helix model of DNA was proposed by

The pitch of the B-DNA is

1. 36 A

2. 3.4 A

3. 34 A

4. 3.6 A

In DNA, cytosine pairs with

1. Guanine

2. Thymine

3. Adenine

4. Uracil

Which of the following are basic amino acids?

In B-DNA, one full turn of the helical strand contains

1. 11 base pairs

2. 8 base pairs

3. 10 base pairs

4. 9 base pairs

In which of the following energy is released?

Which of the following is not strictly a biomacromoles?

1. Proteins

2. Lipids

3. Polysaccharides

4. Nucleic acid

A secondary metabolite that acts as a toxin is

1. Carotenoids

2. Curcumin

3. Abrin

4. Monoterpenes

A secondary metabolite that is alkaloid in nature is

1. codeine

2. Anthocyanin

3. Gum

4. Abrin