MBI Exam 1 Outline 1

MBI Exam 1 Outline 1 - Outline 1: Principles of Infection...

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Outline 1: Principles of Infection and Disease I. Definitions A. Symbiosis : organisms living together A.1. 3 Forms A.1.a. Commensalism : 1 benefits, 1 unaffected A.1.b. Mutualism : both benefit A.1.c. Parasitism : 1 benefits, 1 is harmed - In a disease: the microbe benefits and the person is harmed B. In disease events, usually parasitism is the cause B.1. Host : organism that provides nutrients, protection, etc. to another organism B.2. Parasite : organism that lives at the expense or harm of a host B.2.a. Usually smaller than the host B.2.b. Metabolically dependant upon host C. Disease: an upset in the homeostasis of the hose, resulting in observable changes C.1. Symptom : subjective evidence of damage to the host C.1.a. Headache, anorexia C.2. Sign : objective evidence of damage to the host C.2.a. Fever, rash, vomiting C.3. Infectious Disease : damage or toxicity in body caused by an infectious agent (like a parasite) D. Pathogen: microorganism capable of causing disease E. Virulence:
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MBI Exam 1 Outline 1 - Outline 1: Principles of Infection...

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