What are proto-onc genes and onc genes?
What are proto-onc genes and onc genes? Proto-onc genes are normal cellular genes that code for a product involved in promoting cell division Onc genes are mutated proto-onc genes that cause cells to divide uncontrollably
Give four examples of oncogenic viruses
Give four examples of oncogenic viruses Hepatitis B (Hepadnaviridae) Human T cell Leukemia Virus (HTLV) in the Retroviridae family EBV in the Herpesviridae family HPV in the papovaviridae family
What are prions?
What are prions? Proteinaceous infectious particles
What are some diseases caused by prions?
What are some diseases caused by prions? Mad Cow Disease (BSE) vCJD (Variant Creutzfeld-Jacob Disease) Scrapie
What family of viruses contain double-stranded RNA?
What family of viruses contain double-stranded RNA? Reoviridae
What family of DNA viruses use reverse transciptase?
What family of DNA viruses use reverse transciptase? Hepadnaviridae
What family of viruses contain double-stranded RNA?
What family of viruses contain double-stranded RNA? Reoviridae
What are the five stages in the development of a disease?
What are the five stages in the development of a disease? Incubation period Prodromal period Period of illness Period of decline Period of convalescence
What are Koch’s postulates?
What are Koch’s postulates? Same pathogen must be present in every case of the disease Pathogen must be isolated from the disease host and grown in pure culture Pathogen from pure culture must cause the disease when inoculated into a healthy host Pathogen must be isolated from the newly diseased host and shown to be same as original organism
What is an endemic disease?
What is an endemic disease? A disease that is constantly present in the population
What is mutualism?
What is mutualism? A type of symbiotic relationship where both organisms benefit