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Passage 2.1 (Questions 1-Often, bacteria are grown on a medium that contains ... ...

In experiment 3, which of the following biomolecules would we expect to become labeled?
(A) All proteins, DNA, and RNA
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in 02. Biological Molecules

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Replies to This Thread: 1 | ----
Passage 2.1 (Questions 1-Often, bacteria are grown on a medium that contains ... ... 
Posted: 01/13/2015 18:43
If arginine and phosphorus are radioactive, why wouldn't proteins including the radioactive amino acid, arginine, be radioactive as arginine is not required to make proteins? DNA and RNA both contain phosphorous in their phosphate groups, so why isn't the solution C
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Posted: 04/22/2015 14:05
Reply: because the while the arginine is present it is not radioactively labelled, meaning that the labelled products are phospholipids, Dna, and rna, thus d is the only answer that is correct.
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