MICR 302- Final Exam Guide - Comprehensive Notes for the exam ( 129 pages long!)
29 Mar 2018
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Document Summary
Single-celled for most or all of its life. We are dependent on processes they carry out. Generally: # of genes re ects the complexity of the organism prokaryotes. Small % of this is actually coding (taken up in genes) Used to call other dna junk but it may be key to our complexity. Short protein excursions embedded in the pm. Generally circulate in bacteria (euks = linear) Composition of peptidoglycan layer useful for taxonomy basic unit: 2 repeated sugars (nam-nag) (common for polysachhs to be repeating units, not or proteins) Forms as open helix w/peptides projecting out. Can become cross-linked (covalently attached) to form a hard protected shell around the bacteria to protect from conditions (antibiotics) Composition of peptide side chains differs b/w organisms and can be used as classi cation tool. Crosslinking and production of peptidoglycan = target for antibiotics due to speci city and location (happens outside of cytosol)
