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What is the Function of lactose in Mac Convey agar?
Lactose is used as a selective nutrient in the agar as not all microbes can process lactose
What is the color of mac conkey agar of klebsiella?
It's pink, since it can use lactose as it's nutrition source
Lactose fermentation mac conkey test which color indicate a positive test?
MacConkey agar is yellow (due to the lactose in the agar). When an organism consumes the lactose, the agar turns purple. Purple indicates a positive test. If the organism doesn't use the agar, the agar stays yellow.
What should you drink to grow up?
Water and milk (provided they are not lactose intolerant) are the healthiest drinks for children and adults.
What type of sugar is found in milk?
LACTOSE sugar
Why does mold grow faster on bread soaked in milk?
Because milk has lactose which is a type of sugar. It also adds moisture. Both sugar and moisture are needed for mold to grow.
What monosaccharides are in milk?
lactose
Can Pseudomonas fluorescens grow on MacConkey agar?
Yes. But because it is not a lactose fermenter, the colonies will be colorless (or sometimes have a green tint).
Does coke have lactose in it?
Cola is lactose free it has no lactose it has glucose in it !
What types of organisms could grow on Endo agar?
Since Endo Agar selects for Gram negative (-) organisms, and differentiates for lactose, lactose += red colonies and surrounding medium, also coliforms produce a golden metallic green sheen, E. Coli is one example of a microorganism that could grow on Endo Agar.
Why did the colonies on the MAC plate turn pink?
The colonies that grew on MAC plate took up lactose from the medium for their metabolism and released an end product that caused the pH indicator of the medium (neutral red) to turn pink. Hence the colonies appears pink in color.
What is the purpose of lactose in the macconkey agar?
to differentiate between the lactose fermented bacteria or non- lactose fermented bacteria
