Make New Flash Cards Explore Existing Flash Cards More Microscope Cards

Flash Cards - More Microscope Cards

-
1) Select 2) Study 3) Practice
Ways to Study: View All Flashcards | Flip the Cards
Immersion Oil
Decreases refraction (Bending) of light rays; when oil is used the aberrations are diminished and the resolution is enhanced View
Wet Mount
Used to determine true directional motility. Highest total mag is 400x (can't use oil immersion) Alternatives: Hanging drop, motility agar View
Brownian Movement
Vibration of an organism; not true movement View
Pure, Mixed, Contaminated Cultures
Pure: Only 1 type of bacterium Mixed: >1 type of bacteria in one culture Contaminated: Unexpected occurrence of a bacterium in a culture View
Culture Temps for Lab Experiments
25 oC -- Ambient, room temp 30 oC 37 oC -- Human body temp View
Nutrient Broth
Provides necessary carbon, nitrogen, and vitamins for most organisms used in the lab experiments View
Enriched culture
For fastidious organisms; Trypticase soy agar (TSA) and blood agar View
Agar
A polysaccharide from marine (red) algae Solid: 1.5% agar Semi-solid: .5% agar Forms of agar culture media: plate, slant, deep tube View
Selective Media
Media containing a chemical to suppress undesired microbes (e.g., salt selects for Staphylococcus sp., bile salts select for enteric, gram- bacteria) View
Differential Media
Media designed to distinguish between species (e.g., lactose fermentation). Changes color if rxn occurs View
Ubiquitous
The idea that microorganisms are present everywhere and at the same time View