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What is negative lactose fermentative organisms?
these are those bacteria which are not able to ferment lactose sugar hence are called non lactose fermenting or negative lactose fermenting organisms.
Why are some organisms positive in the ONPG Test but negative when tested for the ability to metabolize lactose?
ONPG is for the detection of delayed lactose fermentation.
Does Morganella Morganii ferment lactose?
no, it shows negative for lactose fermentation on MacConkey's agar
Is Pseudomonas luteola oxidase positive?
in the absence of glucose or lactose , some bacteria are able to use citrate as only source of carcon. alkaline pH change the bromothymol blue indicator from green to blue. pseudomonas can not ferment the glucose and the lactose so it use the citrate as carbon source.
Why is lactose fermentation common among enteric gram negative bacteria?
Probably because that is where the gram negative bacteria have found a food source. Lactose is not the perfered diet, but it works and they are most likely there because they can tolerate the environment, and survive (on lactose) when their #1 food source is not available.
Does providencia bacteria ferment lactose?
No, it doesn't. After performing the Lactose fermentation test, the isolated colonies will turn yellow meaning that the test was negative.
What bacteria is indole negative urea positive methyl red positive hydrogen sulfide positive and lactose negative?
urease negative
Is lactose a harmful ingredient?
Some people are lactose intollerant but for most people lactose (in milk) is fine.
Are cats lactose and tolerant?
I think you mean "lactose intolerant". Yes, some cats are lactose intolerant. However in rare cases, they are not.
What organism found in urine culture is gram negative rods and lactose fermenter?
E. coli
What level of classification includes the most different types of organisms?
what is the largest classification of oraganisms? what is the largest classification of oraganisms? what is the largest classification of oraganisms?
Is sheep cheese lactose free?
All milk has lactose. It is the sugar in milk. During cheese making, the fermentation bacteria that sour the milk are converting the lactose to lactic acid. Despite this fermentation some lactose almost always remains in the cheese. Lactose intolerance varies from person to person. Some cheeses which are dry enough and have very little lactose remaining can be handled by those with milder lactose intolerance.
