The term 'antibiotic' was coined by ........

What do photosynthetic microbes produce?

In cattle,these are helpful in the digestion of cellulose.

Which of the following is an antibiotic?

Consider the following statements:
$I.$ Antibiotics are chemical substances produced by some microorganisms which can kill or retard the growth of other disease-causing microorganisms.
$II.$ Penicillin is the first antibiotic discovered by Alexander Fleming $(1928)$,while working on the bacterium $Staphylococcus$ $aureus$.
$III.$ The function of penicillin as an antibiotic was established by Ernst Chain and Howard Florey.
Which of the statements given above are correct?

Microbes like ............ can be grown easily on material like waste water from potato processing plants (containing starch).