Study Questions List 8 major structural differences between prokaryotes and eukaryotes and/or draw a picture of each cell type that shows these differences (don’t forget to label the structures). is…
Read More →Capsule Gelatinous layer surrounding the bacterial cell; gives many bacterial colonies a mucoid appearance. Composed of polysaccharide (except in Bacillus anthracis) which varies among bacteria and is used in identification.…
Read More →1. Cytoplasmic (Cell) Membrane Located just inside the peptidoglycan layer. Phospholipid bilayer similar to eukaryotic membranes, but does not contain sterols (except Mycoplasma species). Functions: transport of molecules into cell…
Read More →like a stiff “canvas sack” around the bacterial cell. maintains cell structure. is a permeability barrier to large molecules (like lysozyme) and hydrophobic molecules; also provides protection from adverse environments…
Read More →Structure Chemical Composition Function Essential Components Cell Wall Peptidoglycan Outer membrane of Gram- negative bacteria Surface fibers of Gram- positive bacteria Sugar…
Read More →Name Reason Alternative Microscopic Approach Mycobacteria(Ex. M. tuberculosis) Too much lipid in cell wall so dye cannot penetrate Acid-fast stain Treponema pallidum Too thin to see Dark-field microscopy or fluorescent…
Read More →It is difficult to classify all bacteria into clear-cut categories. Various classification methods are used, depending in part, on the purpose. Nomenclature Bacteria are given 2 names (usually Latin)…
Read More →Property Prokaryotic Bacterial Cells Eukaryotic Human Cells DNA within a nuclear membrane No Yes Number of chromosomes 1 More than 1 Mechanism of Replication Binary Fission Mitosis Presence of…
Read More →Learning Objectives: You should be able to: describe the major differences between eukaryotic and prokaryotic cells and explain why it is important to know the differences. use bacterial nomenclature properly.…
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