Microbiology and Immunology 3820A Lecture Notes - Lecture 10: Archaea, Rickettsia, Lipid Bilayer
8 Dec 2016
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10% of cells in us are human, 90% are bacterial cells we carry. Human cells are 8000x heavier and larger than bacteria. Microbes invading a sterile spot, or microbes causing inflammation and tissue damage constitutes as infection. Classification of infectious agents: nonliving infectious agents. Eukaryotes: animals (including helminths), plants, fungi, algae & protozoa. Prokaryotes: archaea (no medical importance but live in hot water upwellings in the sea) & bacteria. Note: viruses and prions are not cells. Larger ribosomes 80s, bound to endoplasmic reticulum (rough er) Mitochondria are bacteria very closely related to reticulas. We are wrong when we think bacteria and our cells are not on a continuum of life. No subcellular organelles (they are subcellular organielles) Super coil some chromosome in a circle double coiled dna. Need special enzymes to super coil and pack it in called nucleoid. Osmotic barriers, found in prokaryote and plant cells. We do(cid:374)"t ha(cid:448)e (cid:272)ell (cid:449)alls (cid:271)ut (cid:449)e (cid:272)a(cid:374) e(cid:454)o(cid:272)(cid:455)tose the e(cid:454)(cid:272)ess (cid:449)ater.
