Question

Which of the following is true about selective media?

Group of answer choices

a) Selective media favors growth of either gram positive or gram negative, while inhibiting the other

b) Selective media contains general ingredients that allows the growth of fastidious bacteria

c) Selective media allows identification based on biochemical properties

d) Selective media contain very defined ingredients, where all chemical components are known

Answer 1

Selective media is widely used media for isolation of particular microorganisms.

the following options are true with respect to selective media:

a) selective media favors growth of gram positive or gram negative, while inhibitng the other

d) selective media contain very defined ingredients, where all chemical components are known

These options are true because selective media are enriched with certain ingredients which in general is used for the growth and isolation of desired microbe or microbe of interest from a mixed culture. it favors growth of certain bacteria and as a result inhibits the growth of unwanted microbes. such media are very essential from microbiological point of view.