Which of the following microbe is used in production of antibiotics?
A. Penicillium notatum
B. Streptomyces griseus
C. Aspergillus niger
D. Clostridium butylicum
E. Saccharomyces cerevisiae
Choose the correct answer from the options given below
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → A and B only
Antibiotics are chemicals made by some microbes that kill or stop the growth of other, disease-causing microbes.
A. Penicillium notatum — Used for antibiotics. This mould gave penicillin, the first antibiotic, discovered by chance by Alexander Fleming.
B. Streptomyces griseus — Used for antibiotics. This soil bacterium produces the antibiotic streptomycin.
C. Aspergillus niger — Not used for antibiotics. This fungus is used for the commercial production of citric acid.
D. Clostridium butylicum — Not used for antibiotics. This bacterium produces butyric acid.
E. Saccharomyces cerevisiae — Not used for antibiotics. This is yeast, used for bread, alcoholic drinks and the commercial production of ethanol.
NCERT Extract:
Antibiotics – “… You are familiar with the commonly used antibiotic Penicillin. … Alexander Fleming while working on Staphylococci bacteria, once observed a mould growing in one of his unwashed culture plates around which Staphylococci could not grow. He found out that it was due to a chemical produced by the mould and he named it Penicillin after the mould Penicillium notatum.”