Why are the following ingredients incotporated into the culture medium

1
Apa ingredients yang diberi?
a. yeast extract,lactose,bile salts,crystal violet,phenol red and sodium azide.
awak belajar microbiologi ke? ke ni biologi sekolah?

Jawapan

2016-10-14T23:11:15+08:00
Lactose: providing carbon and energy to culture media
Bile Salts: inhibit Gram-positive organisms (including bacteria)
Crystal Violet: Gram-positive bacteria are generally inhibited by crystal violet
Phenol Red: act as pH indicator (orange for alkaline indication, red for acidic indication)
Sodium azide: inhibit Gram-negative organisms (including bacteria)