Give any two bioactive molecules produced by microbes and state their uses.

Explanation

Antibiotivs are chemical substances produced by microoganisms which can kill or retard the growth of other disease causing microbes even in low concentration. Examples of antibiotics are :
(i) Penicillin : Penicillin is an antibiotic produced by the fungus Penicillium notatum.
Action : It is bactericidal in action and inhibits the synthesis of the bacterial cell wall.
(ii) Streptomycin : It is a broad spectrum antibiotic isolated from the actinomycetes, streptomyces griseus.
Action : It is bactericidal against both gram positive and gram negative bacteria especially against Mycobacterium tuberculosis.