7. If radioactive sulfur (35S) is used in the culture medium of bacteria that harbor bacteriophage viruses, it will later appear in:
A. bacterial RNA
B. bacterial cell walls
C. viral DNA
D. viral RNA
E. viral coats
2007-02-10 06:48:52 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Biology
E. Viral coats, because viral coats are made of protein, and only protein has sulfur in it.
2007-02-10 06:52:57 · answer #1 · answered by kz 4 · 0⤊ 0⤋
The viral coats seems to be the right answer and all the RNA, DNA answers are wrong. The one that is not clear to me is the "bacterial cell walls". Here, I think that the questioner is saying that the sulfur would not appear there because the cell walls are lipid, but, actually, there are signaling and scaffold proteins in the cell walls, so probably the sulfur would appear there also. But, the teacher is probably looking for E as the answers.
2007-02-10 15:02:01 · answer #2 · answered by cancerdoc 1 · 0⤊ 0⤋
Viral coats.
Nucleic acids do not contain sulfur. DNA and RNA have C, H, O, N, P.
The protein coats of viruses can contain sulfur. Proteins have C, H, O, N, S.
2007-02-10 14:51:45 · answer #3 · answered by ecolink 7 · 0⤊ 0⤋
e viral coats
it is the only answer that even contains sulfur because the viral coats are made of proteins which contain sulfur
2007-02-10 16:26:09 · answer #4 · answered by wesnaw1 5 · 0⤊ 0⤋