wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

Which of the following statements does not hold true for restriction enzyme?

A
It recognizes a palindromic nucleotide sequence
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
It is an endonuclease
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
It is isolated from viruses
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
It produces the same kind of sticky ends in different DNA molecules
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is C It is isolated from viruses
The restriction enzymes are called 'molecular scissors' and are responsible for cutting DNA on specific sites. These are not found in viruses but found in bacteria.

There are of two kinds of restriction enzymes - exonucleases and endonucleases. Exonucleases remove nucleotides from the ends of the DNA whereas, endonucleases make cuts at specific positions within the DNA.

Special sequence in the DNA recognized by restriction enzymes is called palindromic nucleotide sequence. The restriction enzyme may produce the same kind of sticky ends in different DNA molecules or it may produce blunt end in different DNA molecules.

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