question
metabolism
answer
chemical processes that sustain life of organisms
question
endoenzyme
answer
produced and function inside the cell
question
exoenzyme
answer
produce inside the cell, but function outside the cell; break down large molecules
question
selective media
answer
contains chemicals that enhance and/or inhibit growth
question
differential media
answer
distinguishes bacterium by how that metabolize or change the media with a waste product
question
enriched media
answer
contains ingredients that enhance growth of desired bacteria, but allow others to grow as well
question
acid metabolic mechanisms
answer
simple sugar -> endoenzyme -> acid
complex sugar -> exoenzyme -> simple sugar -> acid
complex sugar -> exoenzyme -> simple sugar -> acid
question
ammonia metabolic mechanisms
answer
amino acid -> endoenzyme -> ammonia
protein -> exoenzyme -> amino acid -> ammonia
protein -> exoenzyme -> amino acid -> ammonia
question
Eosin Methylene Blue (EMB) Agar
answer
selective for gram-negative bacteria and differential for organisms that ferment lactose; selective due to methylene blue and eosin; fermenters lower pH which interacts with eosin; non-fermenters increase pH by deamination of proteins
question
Phenylethyl Alcohol Agar (PEA)
answer
selective for gram-positive bacteria; interferes with gram-neg DNA synthesis
question
Thick, strong growth (EMB)
answer
gram negative
question
Weak growth/no growth (EMB)
answer
gram positive
question
pink, black or metallic green growth (EMB)
answer
lactose fermentation
question
colorless growth (EMB)
answer
no lactose fermentation
question
opaque growth (PEA)
answer
gram positive
question
transparent growth/ weak growth/ no growth (PEA)
answer
gram negative
Order an Essay Now & Get These Features For Free:
Turnitin Report
Formatting
Title Page
Citation
Outline