Proporonal to the size shape and density of the

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Unformatted text preview: ase Ribosome 13 Brock Biology of Microorganisms, 13th Edi,on. The Ribosome •  Composed of ribosomal RNA and proteins, translates mRNA into amino acid chains to form proteins. –  Prokaryotes: free in the cytoplasm or a`ached to cytoplasmic membrane. –  Eukaryotes: free in the cytoplasm or bound to the endoplasmic re,culum. •  •  Prokaryotes: 30S + 50S subunits = 70S ribosome. Eukaryotes: 40S + 60S subunits = 80S ribosome. 14 sandwalk.blogspot.com/2007/10/compositon- of- ribosomes.html Svedberg unit •  Describes the rate of sedimenta,on of a par,cle in an ultracentrifuge. Propor,onal to the size, shape and density of the par,cle but the rela,onship i...
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