Flaming used to sterilize wire loops ,point end of forcep

A type of Radiation sterilization?

Temperature below 100 0 C, pasteurization (63 0 C
for 30 min), to sterilize rubber tubes, glass syringe

Non ionizing type, like
ultra-violate rays, infra￾red ra

Which of the following sentences is false?

Ethylene Oxide: Kills germs by damaging their DNA￾RNA

what damaging ethylene oxide?

Types of disinfectants?

culture media use in Isolate the macroorgansims

Basic requirements for bacteria culture media is only Energy sources and Nutrition,pH,o2

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