Question

First antibiotic isolated was
A.Tetracycline
B.Neomycin
C.Penicillin
D.Streptomycin

Answer 1

Antibiotics are known to be certain microorganisms which kill or inhibit the growth of other microorganisms. Microorganisms are generally isolated from bacteria and fungi.

Complete answer:
Option C- Penicillin- penicillin was the first antibiotic extracted from Penicillium notatum and known as the first true bacteria. It was isolated in the year 1928. Penicillin is isolated from fungi named Penicillium notatum and certain antibiotics like Streptomycin, Chloromycetin, and other such are isolated from bacteria. Antibiotics are used to cure diseases like rabies, typhoid, syphilis, gonorrhea, and many more such diseases.
Penicillin was first discovered by Alexander Fleming isolated from fungi, Penicillium notatum on an infected Staphylococci culture plate.

Let’s observe other options-
Option A- Tetracycline – is used to inhibit the growth of bacteria. It is used to cure diseases like skin infection, eye infection, genital infection, and infection related to body parts.
Option B- streptomycin – is isolated from Streptomyces griseus, a bacteria-based microorganism.
It is used to cure a number of diseases like tuberculosis, Mycobacterium avium , plague, rat-bite fever.
Option D- neomycin- is used to reduce infection during surgery of intestines, symptoms of hepatic coma, skin infections.
It was discovered in 1949. It belongs to a class of drugs known as aminoglycoside antibiotics.

So, option C is the correct answer.

Note: Some important points to remember about penicillin-
It was the first antibiotic to be isolated. It was discovered by Alexander Fleming in the year 1928 from its growth on an infected Staphylococcus culture plate.
Penicillin is used as a painkilling antibiotic and cures infection in body parts like skin, eye, genital tract.