BIOL 2051 Study Guide - Midterm Guide: Microorganism, Polysaccharide, Disinfectant
Document Summary
Microorganisms can be grown in the laboratory or on a culture medium o. Complex medium - composed of digests of chemically undefined substances such as yeasts and meat extracts. Defined medium - precise chemical composition is known. Slants - deeps allowed to solidify at an angle. Sterilization - killing or removal of all living organisms and their viruses from a. Autoclaving - sealied device that allows the entrance of steam under growth medium o pressure o o o o o. Experiment 2 - culturing microorganisms from the environment. Hand washing is the most important way to prevent the spread of disease. Infectious dose - number of microorganisms or viruses sufficient to o establish an infection. Normal or resident microbiota (flora) - occur naturally on the body o. Transient flora - temporarily on body from somewhere else, cannot grow. Microorganisms growing on a solid culture medium will form colonies o o o o o.
