You want to use a radioactive tracer that will label only the protein in an RNA virus. Assume the virus is composed of only a protein coat and an RNA core. Which of the following would you use. Explain your answer and why the others are wrong.
1. Radioactive P
2. Radioactive N
3. Radioactive S
4. Radioactive C
Labeling RNA
2007-07-12 2:27 am
回答 (1)
2007-07-12 10:55 pm
✔ 最佳答案
answer is 3. Radioactive SRadioactive S is a good tool to label proteins.When they are mixed with RNA virus,they will be incorporated into the protein of the virus because two of the amino acids — cysteine and methionine — contain sulfur.
radioactive phosphorus is used to label DNA.
收錄日期: 2021-04-13 00:45:43
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070711000051KK03552