Presentation on theme: "Introduction to Virology Lecture Outline u I. Objectives u II. Historical perspective u III. What is a virus –A. Characteristics –B. Comparison to bacteria."— Presentation transcript:
Lecture Outline u I. Objectives u II. Historical perspective u III. What is a virus –A. Characteristics –B. Comparison to bacteria u IV. Nucleocapsid morphology –A. Helical –B. Polyhedral –C. Complex
u V. How viruses multiply –A. Basic strategy –B. Bacterial viruses –C. Animal viruses –D. Culturing viruses in the lab u VI. How to classify viruses? –A. Formal taxonomies –B. Baltimore Classification –C. Which means what?
u VII. Viruses and the diseases they cause –A. Class I: dsDNA –B. Class II: ssDNA –C. Class III: dsRNA –D. Class IV: ss(+)RNA –E. Class V: ss(-)RNA –F. Class VI: ss(+)RNA with dsDNA intermediate u VIII. Summary of effects of viral infection on cells u IX. Oncogenic viruses
B. Comparison to bacteria 1. overall u Bacteria Virus u Intracellular parasite (no) yes u Plasma membraneyes no u Binary fission yes no u Filterable no yes u Possess DNA & RNAyes no u ATP production yes no u Ribosomesyes no u Antibiotic sensitive yes no
u 2. Size comparison u 3. Genome size comparison
IV. Nucleocapsid morphology u A. Helical u B. Polyhedral u C. Complex
V. How viruses multiply (13.10) u A. Basic strategy –Attachment –Penetration –Synthesis of viral proteins and nucleic acids –Maturation –Release
B. Bacterial viruses: Fig 13.12 u Lytic vs lysogenic cycle
Your consent to our cookies if you continue to use this website.