GMED1000 Lecture Notes - Lecture 4: Nuclear Material, Cytoplasm, Glycocalyx
9 Aug 2018
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Document Summary
Stick to just about anything, tissue, glass, plastic. Bacterial cell wall: same as normal cell wall. Composition differs between gram pos. and gram neg. A gelatinous material which coats the entire surface of some bacteria. Some bacteria are typed by capsule composition - haemophilus influenza b - hib. Don"t absorb stains (therefore show white) but are permeable. Bacteria with glycocalyces are often more pathogenic as: Some bacteria can make a copy of their dna with some cytoplasm and enclose it in layers of thick protein (called sporulation) For survival in unfavourable growth conditions (low moisture or nutrients) Bacillus and clostridium are the only two genera that can do this. 1 spore regenerates into one vegetative cell when it regenerates. Resistant to heat and disinfectants, can survive for years in soil and dust. Larger molecules into smaller ones by breaking chemical bonds. Anabolism (biosynthesis) forming larger molecules from smaller ones by creating chem bonds.
