Use of culture media

Use of culture media in

if colonial characteristics of an organism are to be examined ……………… is an excellent

Kinds of mediaCulture media are divided into 3 types according their solidity are 1. Solid
2. Liquid
3. Gas

Solid media the bacteria are free to move

The appearance of these colonies is often typical of these species; this makes impossible the isolation of single species of bacteria from a mixture

Liquid media are solidified by the addition for example of

Agar does not affect the nutrient properties of the original media

Gelatin is a long-chain carbohydrate

It acts as solidifying agent

MacConkey Agar
Is selective for Gram positive

MacConkey Agar helps to differentiate lactose fermenting gram rods from Non lactose fermenting gram rods

Beta hemolytic clear, colorless, zone of hemolysis 2 to 1.2

Choose the correct answer : about the polysaccharide C antigen is present in the

No hemolysis is :

About streptococcus pyogenes it's
Motile, non sporing , encapsulated

Three type of non specific protein antigen M,T,R , is the correct? Write the reason in the comments