To isolate, identify, and study the characteristics of microorganisms, it is essential to growing them on artificial media.
Moisture plays an important part in the nutrition of bacteria; in the absence of water, bacteria cannot grow.
Organisms cannot always obtain their nitrogenous and carbon requirements from complex proteins and these substances must be broken down into simpler compounds.
The temperature at which cultures are incubated must be observed, as the majority of organisms have an optimum temperature at which the most luxuriant growth is obtained.
Some bacteria can be grown in an artificial medium but some cannot. Hence, statement 1 is correct.
Fungi can be grown in an artificial medium. Hence, statement 2 is correct.
Unlike bacteria and fungi, viruses need a living host to grow. Hence, statement 3 is not correct.