lab exam part 2

designed to differentiate bacteria based on what sugar they can ferment or if they can break down amino acid

if medium is black it’s positive, if medium is not black then negative

formation of gas bubbles or cracks in agar

broken down by catalase and detachment of oxygen reaction is bubbles

detects the presence of cytochrome C oxidase, an enzyme that can oxidase cytochrome C

positive is clear zone around the bacterial growth and negative is blue-black color throughout medium

iodine

test for fermentation and the ability of bacteria to produce enzymes like caseinase

to show for anaerobic bacteria or motility

grown in thayer-Martin agar and media is enriched with blood and nutrients and antibiotics

works by detecting acid producing bacteria like strep. mutans

by the green to yellow color

use enriched media that provide the specific nutrients they require

chemical solution used to detect indole

used to identify and differentiate between various bacterial species

use a Durham tube

CO2 and H2

lactobacillus cells