NURSING ANM AND GNM

Detailed explanation-1: -Auxotrophs are the mutant cells that are incapable of utilizing certain nutrients or synthesizing certain compounds and hence they can grow on minimal media plus the specific growth supplement for which they are mutant.

Detailed explanation-2: -Auxotrophs are a group of organisms that lost the ability to synthesize certain substances required for their growth owing to the presence of mutations.

Detailed explanation-3: -They cannot grow unless their environment contains some specific nutrient – an amino acid, a vitamin, a nucleic acid precursor – that is not required by the prototroph. Some streptomycin-resistant mutants of E. coli are actually dependent on the presence of streptomycin in the growth medium.

Detailed explanation-4: -An auxotroph is a microorganism that is unable to synthesize one or more essential growth factors, and it will not grow in fermentation media lacking them. For example, the yeast S. cerevisiae is auxotrophic for ergosterol and oleic acid when propagated under strictly anaerobic conditions.

Detailed explanation-5: -Auxotrophy (Ancient Greek: “to increase"; “nourishment") is the inability of an organism to synthesize a particular organic compound required for its growth (as defined by IUPAC). An auxotroph is an organism that displays this characteristic; auxotrophic is the corresponding adjective.