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 

 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

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 

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?