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Home Q & A Board Biology-Related Homework Help Cell Biology
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Dannyy Dannyy
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9 years ago
The question I was asked was if the ribosomes in eukaryotic cells and prokaryotic cells have the same molecular structure. I know that they perform the same function but do they have the same molecular structure?
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bio_manbio_man
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9 years ago
 Both cell types have many, many ribosomes, but the ribosomes of the eukaryotic cells are larger and more complex than those of the prokaryotic cell. Ribosomes are made out of a special class of RNA molecules (ribosomal RNA, or rRNA) and a specific collection of different proteins. A eukaryotic ribosome is composed of five kinds of rRNA and about eighty kinds of proteins, while prokaryotic ribosomes are composed of only three kinds of rRNA and about fifty kinds of protein. 
Source  http://www.creative-bioarray.com/Services/Stem-Cell-Differentiation.htm
https://answers.yahoo.com/question/index?qid=20090830225603AArTe12
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