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Unformatted text preview: detached from the mRNA. Several ribosomes may be attached to a strand of mRNA forming a unit called a polysome. A ribosome is composed of 2 subunits. In eukaryotic cells, the subunits are synthesized in the nucleolus and move into the cytoplasm. During the process of protein synthesis, two subunits will come together along with mRNA. . Ribosomes are composed of both RNA (called ribosomal RNA or rRNA) and protein . Ribosomes in eukaryotes about 1/3 larger than those in prokaryotes....
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- Fall '10
- RNA, Cell nucleus