Bio 213 Exam 3 Study Guide Questions and Correct Answers

Contribute to a pathogen's invasiveness. - Capsules - Cell wall components - Hyaluronidase - Coagulase Pathology Study of disease Etiology Cause of disease Pathogenesis Development of disease Infection Invasion or colonization of the body by pathogens Disease An abnormal state in which the body is not performing normal functions Contagious disease Diseases that are easily and rapidly spread form one host to another Incidence The number of people who develop a disease during a particular time period Endemic disease A disease constantly present in a population Prevalence The number of people who develop a disease at a specified time, regardless of when it first appeared Epidemic disease A disease acquired by many people in a given area, in a short time The ability of some microbes, such as Trypanosome or Giardia to alter their surface =molecules and evade destruction by the host's antibodies is called... antigenic variation Biological transmission differs from mechanical transmission in that biological transmission ______. involves reproduction of a pathogen in an arthropod vector prior to transmission.