MBI 111 Exam 1 questions with correct answers

Colonization Answer an attachment to and replication in/on a host Infection Answer a colonization of the body leading to damage Disease Answer any deviation from health -not all disease is due to infection -infection does not always cause disease Symptoms Answer subjective evidence of disease (pain, headache) Signs Answer objective evidence of disease (rash, fever) Why do microbes cause disease? Answer -Pathogens evolved to cause human disease -Disease symptoms develop equilibrium does not develop between the pathogen and host -Humans are accidental hosts of microorganisms that normally occupy a different niche Symbiosis Answer a situation in which 2 populations of organisms interact in a close and sustained association -benefits: food, protection, support, other life-sustaining factors Synergism Answer two populations that liv