Nucleic acids exhibit

1. Secondary structure

2. Tertiary structure

3. Quaternary structure

4. Both (2) & (3)

The backbone of a DNA molecules is made up of 

1. Adenine and guanine

2. Sugar-phosphate-sugar chain

3. Cytosine and thymine

4. All of these

 If the sequence of bases in one of the DNA strand is is A G G A G A A, then the sequence of bases in the other complementary strand of DNA would be

1. C C T T C T T

2. T C T C T C C

3. T C C T C T T

4. C C T C T C T

In a DNA molecule adenine of one strand base pair with _   on the other strand

1. Guanine

2. Thymine

3. Cytosine

4. Both (1) & (2)

In B-DNA, the rise per base pair would be 

1. 4.3 A

2. 2.4 A

3. 3.4 A

4. 4.2 A

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

1. Berzelius

2. Watson and Crick

3. Griffith

4. Robert Brown

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?

1. Glycine and Alanine

2. Lysine and Arginine

3. Glutamic acid and Aspartic acid

4. Histidine and Proline