NATS 1660 Lecture Notes - Lecture 4: Endoplasmic Reticulum, Ribosome, Phospholipid
26 Sep 2017
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Nats 1660 lecture september 28th, 2016. Endoplasmic reticulum (er) = a system of hollow membrane sleeves that connect to the nucleus. Rough er: covered by rna structures called ribosomes: where protein are made. Every cell is covered by a cell membrane (keeps cell of chemicals together, like an envelope). There is also nucleus of the cell (contains genetic material dna only present here). There are 50 trillion of these in the human body. Transcription of dna to rna happens in the nucleus. Rna can move out of the nucleus once it"s synthesized. It moves to the cytoplasm, where translation takes place. 1-1 correspondents to letters in the dna and rna. In translation, 3 letters in rna give rise to a single amino acid. Ribosome = the machine which produces protein based on mrna. Links ribosome based on information from mrna. mrna = messenger rna. Codon 3-letter blocks (code for a particular amino acid).
