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Q. No.

One turn of the helix in a B-form DNA is approximately of the length

1. 0.34 nm 2. 3.4 nm
3. 2 nm 4. 20 nm

Subtopic:  The DNA |
 83%
Level 1: 80%+
Hints

Each step of ascent of a strand of DNA:

I. is represented by a pair of bases
II. the strand turns 360
III. the rise per base pair is 3.4 nm

1. Only II is correct
2. Only I and II are correct
3. only II and III are correct
4. I, II and III are correct
Subtopic:  The DNA |
 52%
Level 3: 35%-60%
Hints

Most hydrated and most stable form of DNA is known as:

1. A DNA 2. B DNA
3. C DNA 4. Z DNA
Subtopic:  The DNA |
 84%
Level 1: 80%+
Hints
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In the DNA double helix:

I: At each step of ascent, the strand turns 34º.
II: The rise per base pair would be 0.36 nm.
 
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic:  The DNA |
 50%
Level 3: 35%-60%
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