Which types of media in this lab are selective for Gram+ organisms ?

Mannitol Salt Agar

on what basis are the Gram + selective media also differential?

for mannitol fermentation

Which types of media used in this lab are selective for Gram - organisms?

MacConkey agar and Eosin Methylene Blue

on what basis for the Gram- selective media also differential?

for lactose fermentation

what color is mannitol salt agar before it is inoculated

red

how can the appearance of MSA plate change with a positive differential result

color change to yellow

What color is MacConkey agar before it is inoculated?

Raspberry

How is the appearance of MAC plate change with a positive differential result?

pink with precipitate

what color is eosin methylene blue agar before it is inoculated?

burgundy purple

how is the appearance of EMB plate change with a positive differential result ?

shiny metallic green

What is the definition of a selective medium?

grow only certain types of organisms and actively preventing some types from growing

what is the definition of a differential medium?

grow all types of microbes but it causes some organisms to look different

Which type medium used in lab so far this semester is neither selective nor differential?

Tryptic Soy Agar

what is the purpose of differential media ?

for identification

what is the purpose of selective media ?

for identification

grow all types of microorganisms but it causes some organisms to look different

differential media

grow only certain types of organisms actively preventing some types from growing

selective media

what is enrichment media

it is designed to promote the growth of a rare organism

designed to promote the growth of rare organisms

enrichment media

which bacteria would it be if the eosin methylene blue plate is shiny metallic green?

Escherichia coli

Escherichia coli

which bacteria would it be if in MacConkey agar is pink with precipitate ?

Escherichia coli

Escherichia coli

Enterobacter aerogenes

which bacteria would it be in eosin methylene blue if it were pink and moist ?

Enterobacter aerogenes

what bacteria would it be in MacConkey of it were pink without precipitate ?

Enterobacter aerogenes

Enterobacter aerogenes

Proteus vulgaris

what bacteria would it be on a MacConkey agar and it were no new color on plate and is brownish

Proteus vulgaris

Proteus vulgaris

What is the bacteria eosin methylene blue if there is no color change?

Proteus vulgaris

strong lactose fermenter

Escherichia coli

medium lactose fermenter

Enterobacter aerogenes

does not ferment lactose

Proteus vulgaris

Staphylococcus aureus

which bacteria would be on a mannitol salt agar if it were yellow

Staphylococcus aureus

Staphylococcus epidermidis

what bacteria would it be if mannitol salt agar remains red, and maybe more pink?

Staphylococcus epidermidis

weak mannitol fermenter

Staphylococcus epidermidis

strong mannitol fermenter

Staphylococcus aureus

EMB selective

against Gram +, for Gram -

MAC selective

against Gram +, for Gram -

EMB differential

lactose fermentation

MAC differential

lactose fermentation

MSA selective

against Gram -, for Gram +

MSA differential

mannitol fermentation