Biomolecules Question 24
Question: All the following radio nuclei are used in the study of DNA except:
Options:
A) $ ^{14}C $
B) $ ^{32}P $
C) $ ^{15}N $
D) $ ^{51}Cr $
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Answer:
Correct Answer: D
Solution:
[d] Chromium is not used to label nucleic acids since it is not an atom found in nucleic acids and nucleoprotein.
It is used for the study of RBC kinetics.
$ ^{35}S $ is tagged to methionine which is then incorporated to newly synthesised proteins.
$ ^{35}P $ and $ ^{15}P $ are incorporated into newly synthesizing DNA strands.
BETA
