1
Question
Antibiotics are drugs commonly used to cure disease of
Antibiotics are drugs commonly used to cure disease of
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Solution
The correct option is D Bacteria
Definition :
Antibiotics are chemical substances produced by certain microbes that can either kill or inhibit the growth of other disease-causing microbes.
Mode of action :
Antibiotics usually act against bacteria in either inhibiting cell wall synthesis or by inhibiting certain metabolic reactions (protein synthesis, nucleic acid synthesis). This either restricts the growth of bacteria (bacteriostatic antibiotics) or kills them (bactericidal antibiotics).
Antibiotics cure most diseases that are bacterial in origin.
Action on viruses, fungi, protozoa :
Viral infections like common cold, chicken pox cannot be cured with antibiotics as viruses do not have cell walls and metabolic machinery of their own.
Some antibiotics act against fungal and protozoal infections.
Final answer :
(D) Bacteria
Definition :
Antibiotics are chemical substances produced by certain microbes that can either kill or inhibit the growth of other disease-causing microbes.
Mode of action :
Antibiotics usually act against bacteria in either inhibiting cell wall synthesis or by inhibiting certain metabolic reactions (protein synthesis, nucleic acid synthesis). This either restricts the growth of bacteria (bacteriostatic antibiotics) or kills them (bactericidal antibiotics).
Antibiotics cure most diseases that are bacterial in origin.
Action on viruses, fungi, protozoa :
Viral infections like common cold, chicken pox cannot be cured with antibiotics as viruses do not have cell walls and metabolic machinery of their own.
Some antibiotics act against fungal and protozoal infections.
Final answer :
(D) Bacteria
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