HSS 1100 Lecture Notes - Lecture 1: Lipoprotein, Semipermeable Membrane, Treatment As Prevention

• School: University of Ottawa
• Department: Health Sciences
• Course: HSS 1100
• Professor: Franco Pagotto

Document Summary

Viruses consist of nucleic acids and a protein shell known as a capsid. Viruses enter cells and use their processes for replicaion. In some cases this can kill (or not) the host cell. Other bacteria such as chlamydia are more complex than viruses but sill only muliply in living cells. Within the cells they have a recognizable morphology and life cycle. Bacteria are prokaryotes, have a rigid cell wall with cytoplasm and their geneic material organized into a circular chromosome. Mycoplasmas are similar to bacteria but don"t have the rigid cell wall, and are delicate. Eukaryotes - this comprises all unicellular and mulicellular animals and plants. The geneic material is organized into a nucleus. Bacterial populaions can be considered as being resident or transient. For example, in the colon there are large numbers of anaerobes and coliform organisms, and the skin is populated mostly by coagulase negaive staphylococci.