Lactose is strung together using beta1-4 glycosidic bonds. Some humans cannot digest it (lactose intolerance). In fact, the ability to digest lactose was actually a mutation! When it passes through the digestive tract undigested it empties from the small intestine to the large intestine's cecum. There, gut flora (microorganisms) ferment lactose and other carbohydrates for energy. The fermentation process releases some very helpful compounds for the human's benefit, too (SCFAs).
E Coli is one of the many microorganisms that live in our large intestine. It, and the others, ferment lactose (among other things) for energy.
I hope that answers your question! :)
What on earth do you mean?
"Ecoli" or E. coli (full name Escherichia coli) is a a species of bacteria. Plenty of E. coli live in our gut and are helpful. Some strains (i.e. variants) of E. coli are harmful and can cause food poisoning.
Lactose is the type of sugar found in milk, and in other dairy products to some extent.
If you mean, "Is E. coli lactase positive (Lac+)?", meaning can it ferment lactose for energy, then the answer is yes.
E.coli shows pink colour colonies in MacConkey agar due to fermentation of lactose
Bacteria
Mostly in urine culture when it is done to diagnose the pt. of urinary tract infection. ecoli is commensol microorganism of intestine.
Ecoli doesn't develop on food. It reaches food through contamination.
asexually
ecoli is a lactose metabolizer, can live on macconkey while psuedomoas cannot.
E.coli shows pink colour colonies in MacConkey agar due to fermentation of lactose
When a product has the Ecoli bacteria and you consume it.
is vancomicyn resistant ecoli contagious
yes.
MacConkey's agar is a differential media used to differentiate between lactose fermenting and lactose non-fermenting bacteria. E.coli is a lactose fermenter whereas Pseudomonas is a lactose non-fermenter.MacConkey's agar contains lactose as fermentable sugar and when it is fermented the pH of the medium decreases which is registered by neutral red (a pH indicator).Lactose fermenters such as E.coli produce pink colonies whereas lactose non-fermenters such as Pseudomonas produces colorless colonies. So the colors of E.coli and Pseudomonas colonies are different on MacConkey's agar.
no
yes black people can only get sick from ecoli
no
in your mom
EColi bacteria is a very dangerous and deadly bacteria that is found on food.
LACTOSE sugar