Microbiology and Immunology 3820A Lecture Notes - Lecture 1: Endoplasmic Reticulum, Alpha Helix, Protozoa
19 Nov 2017
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They have their own genetic component: circular, double-stranded chromosomes prokaryotic cell. Prokaryotic microbe has fused into the cell and created a symbiotic relationship. Living agents: made of cells, 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. Eukaryotes: defining characteristic is the nuclear membrane, multiple chromosomes, ds dna strands, subcellular organelles (e. g. chloroplasts, mitochondria, larger ribosomes 80s, bound to endoplasmic reticulum (rough er, larger cells, 10-100 m. Prokaryotes: archaea and bacteria, no nuclear membrane (nucleoid). Contains teichoic acid: gram-negative: complex structure with inner and outer membranes, lps, porin proteins and thin peptidoglycan layer, shapes of bacteria, cocci (chains vs clusters). Eg: staphylococcus spp (staph = grapes: rods (bacilli). Eg: salmonella typhi (cause typhoid fever: short rods (coccobacilli). Eg: haemophilus ducreyi (cause sti chancroid: curved.
