-Archaea
-Eukarya
-Bacteria
-Viruses
2007-01-21 15:08:10 · 4 answers · asked by Steenskees 2 in Science & Mathematics ➔ Biology
Viruses don't have ribosomes thus no rRNA and no rRNA loop.
If you are refering to the 5S rRNA loop E, then all cells have it. It is absent only from small mitochondrial ribosomes.
http://www.pubmedcentral.nih.gov/picrender.fcgi?artid=1369688&blobtype=pdf
If you are refering to another structure please be more specific.
2007-01-22 03:49:31 · answer #1 · answered by bellerophon 6 · 0⤊ 1⤋
All of the above, in tRNA. But the question is probably looking for bacteria, if you're talking about the stem-loop hairpin structure that terminates transcription.
Also, the above poster is wrong--bacteria do have ribosomes and RNA. I hope he's joking.
2007-01-22 00:02:19 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Eukaryotes. Bacteria and Arhaea are prokaryotic, viruses do not have cellular structures, they're RNA strands.
2007-01-22 03:29:32 · answer #3 · answered by Qyn 5 · 0⤊ 0⤋
Eukarya
Bacteria and Archaea are prokaryotic and do not have Ribosomes therefore no rRNA
Viruses have no cell, they are parasitic
2007-01-21 23:26:31 · answer #4 · answered by Anonymous · 0⤊ 3⤋