A) 20 nm
B) 0.34 nm
C) 3.4 nm
D) 2 nm
Correct Answer: C
Solution :
B-DNA is helical structure with \[20\overset{\text{o}}{\mathop{\text{A}}}\,\] diameter and the distance between the two base pairs is \[3.4\overset{\text{o}}{\mathop{\text{A}}}\,\] and there are 10 base pairs in each turn or pitch (one round). Hence, one turn of the helix is approximately \[34\overset{\text{o}}{\mathop{\text{A}}}\,\] or 3.4 nm \[(10\overset{\text{o}}{\mathop{\text{A}}}\,\,=1.0\,nm)\]
You need to login to perform this action.
You will be redirected in
3 sec
