Question

Against which foreign organism, antibiotic is effective?
1. Virus
2. Bacteria
3. Fungal infection
4. Protozoa
5. Helminthes

Answer 1

Correct Answer - Option 2 : Bacteria

The correct answer is Bacteria.

• Antibiotics are effective against bacterial infections.
• Bacteria are microscopic, single-celled organisms
  • The cell structure is simpler than that of other organisms as there is no nucleus or membrane-bound organelles.
  • Some bacteria are harmful, but most serve a useful purpose(for example cyanobacteria, produce oxygen).

• Virus an infectious agent that contains a single nucleic acid (RNA or DNA) and replicates inside the living cells of an organism.
• Protozoa are unicellular organisms with no cell wall. 
  • Plasmodium (malarial parasite), Trypanosoma (sleeping sickness), Trichomonas (trichomoniasis), etc. are the examples of few disease causing protozoas.
• Helminths are worm-like parasites that are characterised by elongated, flat or round bodies and survive by feeding on a living host.