Biomolecules Sample Questions for Class 12
Question 1
The major function of DNA ligase is to
A. cut DNA strand open at a specific site.
B. help protein to bind DNA tightly.
C. transcribe DNA into RNA.
D. link two DNA strands from 3' to 5'.
Question 2
Endonucleases act on
A. DNA.
B. RNA.
C. protein.
D. carbohydrates.
Question 3
Which molecule is a helper protein?
A. substrate
B. enzyme
C. active site
D. product