Question

Why e coli grow only on macconkey agar in one line?

Answer 1

MacConkey agar is an indicator, a selective and differential culture medium for bacteriadesigned to selectively isolate Gram-negativeand enteric (normally found in the intestinal tract) bacilli and differentiate them based onlactose fermentation.The crystal violet and bile salts inhibit the growth of gram-positive organisms which allows for the selection and isolation of gram-negative bacteria. Enteric bacteria that have the ability to ferment lactose can be detected using the carbohydrate lactose, and the pH indicator neutral red

Answer 2

here is u r answer.
......

it help u..
..............

e coli grow only on Macconkey agar .this is a allowed for the selection and isolation of gram negative bacteria..

okkk...