MMI133 Study Guide - Cell Envelope, Herpes Labialis, Blood Transfusion

• School: University of Alberta
• Department: Medical Microbiology and Immunology
• Course: MMI133
• Professor: Judy Gnarpe

Document Summary

Viruses : think of them like spaceships, without fuel tanks (no energy reserves) Drifts around body until it can dock on cell. Unloads viral nucleic acid and enzymes : those enter the cell. Has the ability to take over cell. Tells the cell what nucleic acid to make. Tells the cell to make more viruses. Responsible for the majority of doctor visits. Can be air borne - most dif cult to treat (ex. measles) Must be treated using different therapeutic strategies ( if it can be treated ) Can only multiply inside the host cells. Contain either dna or rna (never both) Contain few enzymes, only those needed for replication. Have no ribosomes or enzymes for metabolizing nutrients (depend on host cell) No ribosomes or enzymes for metabolizing nutreints. Most are free-living and can multiply in the absence of other cells. Contain ribosomes and enzymes for metabolism of nutrients. Virion : total infectious viral particle with nucleic acid.