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MLS430-unit 1

flashcards for MLS430 unit 1 test

QuestionAnswer
What are the characteristics of eukaryotic cells? (List: cell wall,plasma mem, replication,DNA formation,nucleus) Cell wall: only in fungi and plants Plasma mem: lipoprotein bilayer replic: mitosis & meiosis DNA form: multiple chromosomes Nucleus: membraned
What are the characteristics of prokaryotic cells? (List: cell wall,plasma mem, replication,DNA formation,nucleus) Cell wall: present Plasma mem: lipoprotein bilayer replic: binary fission DNA form: single chromosomes Nucleus: not membraned
What are the characteristics of gram + cell walls? Thick peptido layer, teichoic acid(anchored to peptido), lipoteichoic acid(anchored to plasma membrane)
What are the characteristics of gram - cell walls? Thin peptido layer, outer layer LPS- has 3 regions
What are the characteristics of acid fast bacilli cell walls? AFB cell wall contain mycolic acid and they are much larger, the cell wall structure gives them the property of being acid fast with staining techniques
Name the major components of the cell wall structure Peptidoglycan, Teichoic Acid, Lipoteichoic Acid, Outer LPS
What's the function of peptidoglycan? sufficiently porous to allow diffusion of metabolites, and also can be degraded by a lysozyme
What's the function of teichoic acid? its covalently linked to peptido. which makes it essential to cell viability
What's the function of Lipoteichoic acid? Barrier to hydrophobic compounds and other harmful substances, its also a sieve which allows the passage of water soluble molecs, provides attachment sites for attachment to host cells
What are the characteristics of a capsule(glycocalyx)? capsule is secreted by bacteria, its outside the cell wall, composed of polysacc. polymers, its thick and tightly bound to a cell
Created by: Lilbabyreg08
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