BIOL 3380 Lecture 3: 15 January - Cell Structure and Growth
Document Summary
Cell structure and growth: cytoplasm cell membrane (1 to 5 microns thick cell; cell membrane is about 7 nanometer) van der waals and h bonding keeps phospholipid bilayer together cell. Italicized or underlined: sphere, aureus means yellow, mrsa methathilin resistant; very virulent, ex. Streptococcus mutans: sphere, causes cavities sugar (sucrose, pyogenes, strep throat, ex. Bacillus anthracis: causes anthrax, commonly spherical, medicine don"t let bacteria make peptidoglycan; ex. penicillin. Gram negative bacterium: commonly rod shaped, cytoplasm. Im: cell membrane (inner, on top of inner cell membrane - use peptidoglycan but very thin layer (1 to 2 units in depth which is about 2 to 4 nanometers, outer membrane. Tetra acetylated and 1 phosphate almost undetectable. S layer protein or carb layer around cells; in eubacteria, often present along with other cell wall components. Bind to human cells: adhesion at tip and can pull it back in to move, flagella.
