Question

Which one thing is not true about antibiotics ?

(a) The term 'antibiotic' was coined by Selman Waksman in 1942

(b) first antibiotic was discovered by Alexander Flemming

(c) Each antibiotic is effective only against one particular kind of germ

(d) Some persons can be allergic to a particular antibiotic

Answer 1

Correct Option (c) Each antibiotic is effective only against one particular kind of germ

Explanation:

The statement (c) is wrong regarding to antibiotics because antibiotics are divided into two categories depending upon their effect

(i) Broad spectrum antibiotics They have ability to act on several pathogenic species differing from each others in structure and composition of cell wall.

(ii) Specific antibiotics They act on a few similar type of pathogens.