wiz-icon
MyQuestionIcon
MyQuestionIcon
4
You visited us 4 times! Enjoying our articles? Unlock Full Access!
Question

How many guanines are found in ds DNA that has 1300 H bonds and 20% adenine

A
346
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
210
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
205
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
200
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is A 346
The double strand DNA has total 1300 H bond of which 20% is adenine, hence the total no. of hydrogen bonds in adenine is 260 (20 x 1300 ÷ 100 ) as one adenine is made up of 2 hydrogens there are total 130 ( 260 ÷ 2 ) adenine, the remaining H bonds from 1300 is 1040 ( 1300 - 260 ) which are of guanine ,as one guanine bond is made up of 3 H bonds hence the no. of guanine bonds is 346 ( 1040 ÷ 3 ) .
So the correct answer is " 346 ".

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
DNA
BIOLOGY
Watch in App
Join BYJU'S Learning Program
CrossIcon