
Which of the following statement(s) regarding antibiotics is/are not correct?
(i) Antibiotics are the attenuated microorganisms which in small concentration can kill or retard the growth of other harmful microorganisms.
(ii) Penicillin was the first antibiotic discovered by Alexander Fleming , while working on bacterium .
(iii) The full potential of penicillin as an effective antibiotic was established by Ernest Chain and Howard Florey.
(iv) Fleming, Chain and Florey were awarded the Nobel Prize in .
(i) Antibiotics are the attenuated microorganisms which in small concentration can kill or retard the growth of other harmful microorganisms.
(ii) Penicillin was the first antibiotic discovered by Alexander Fleming , while working on bacterium .
(iii) The full potential of penicillin as an effective antibiotic was established by Ernest Chain and Howard Florey.
(iv) Fleming, Chain and Florey were awarded the Nobel Prize in .
(i) only
(iii) only
(ii) and (iv)
(i), (iii) and (iv)


Important Questions on Microbes in Human Welfare
Which of the following diseases are treated by antibiotics?
(i) Plague
(ii) Diphtheria
(iii) Leprosy
(iv) Whooping cough

Streptomycin is obtained from ------------------.

Which of the following antibiotics is not correctly matched with the source from which it is obtained?

(i) _____ are used in detergent formulations and are helpful in removing oily stains from the laundry.
(ii) _____ are ripened by growing Penicillium roqueforti on them.
(iii) _____ are produced without distillations whereas, _____ are produced by distillations of the fermented broth.
(iv) _____ antibiotic was used to treat American soldiers wounded in world war II.
(v) _____ is also called as Kusht rog.



Identify the blank spaces and in the following table and select the correct answer.
Type of microbe | Scientific name | Commercial product |
---|---|---|
Bacterium | (i) | Streptokinase |
(ii) | Citric acid | |
Fungus | (iii) | |
Bacterium | (iv) | Butyric acid |

A drug used for patient is obtained from the organism . Identify and in the above statement and select the correct answer.
