NURS 3110 Lecture Notes - Lecture 1: Electron Transport Chain, Spindle Apparatus, Endoplasmic Reticulum
Document Summary
Light waves pass through cell, emerge in different phases. Chromosomes contain linear dna in a double helix. Endoplasmic reticulum (er) - some coated w/ ribosomes which synthesize proteins. Microtubules: cell shape, form mitotic spindle and flagellar components. Flagella (longer, from polar regions propel cell through water) Slime layer = less likely to be killed off by different chemical agents. Important when thinking about treatment (harder to control environment when it creates spores) Missing mitochondria (electron transport and cellular respiration not happening, happens in cytoplasm) The cell envelope: layers that surround the cell. Endotoxins (lipopolysaccharide) -when cell is lysed = dangerous. Gram positive: whole other layer outside of lipid bilayer, thick layer of peptidoglycan (natural affinity towards water soluble) Gram positive vs. gram negative: presence of lipopolysaccharide (in gram neg) end up being endotoxins if cell is lysed* The cell wall - layers between cytoplasmic membrane & capsule. Special channels (porins) allow hydrophilic compounds to pass.
