The Solidifying Agent Used Most Successfully in Bacterial Nutrient Media

Question

The solidifying agent used most successfully in bacterial nutrient media is
A) gelatin.
B) peptone.
C) agar.
D) starch.
E) agarose.

Accepted Answer

Agar is the most commonly used solidifying agent in bacterial nutrient media. It is a polysaccharide derived from seaweed and provides a stable, uniform surface on which to grow bacteria. Gelatin can be used as a solidifying agent, but it is not as reliable or consistent as agar. Peptone and starch are not solidifying agents and agarose is not commonly used in bacterial nutrient media.