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| Ribosomes are small structures found in all living cells. They can be free in the [[Cytoplasm]] or attached to Endoplasmic Reticulum (E.R), making Rough E.R. They can differ in size and number, according to whether they are found in [[Bacteria]], [[Archaea]] or in [[Eukaryotes|Eukaryotes]]. There are a large number of ribosomes in cells. In Eukaryotes, there can be millions in one cell alone. As ribosomes are so small, (it has a diameter of 25-30nm approximately)<ref>Becker, Wayne M., Kleinsmith, Lewis J., Hardin, Jeff., Bertoni, Gregory Paul. (2009) The World of the Cell, 7th Edition, San Francisco: Pearson Benjamin Cummings. P95.</ref>, an [[Electron Microscope]]is needed to see it.<br>Ribosomes are made up of two subunits, one larger than the other. The two subunits join together when attached to [[MRNA|mRNA]] to make a [[Protein|protein]] in [[protein synthesis|Protein Synthesis]].<br>Ribosomes are also found in [[Mitochondria|Mitochondria ]]and [[chloroplasts|Chloroplasts]] and carry out Protein Synthesis, specifically for these organelles.<br><br>
| | See [[Ribosome|Ribosome]]<br> |
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| === References ===
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| === <br> ===
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Latest revision as of 17:16, 14 November 2011