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BIOLOGY CH22 World of Microbes — Science STD 9 — Question

Tamilnadu BoardEnglish MediumSTD 9ScienceBIOLOGY CH22 World of Microbes1 Mark
Question
Differentiate between Infectious and Non-Infectious disease.
✓

Answer

Infections Disease
  1. They are communicable diseases. .
  2. They are caused by external factors. Invading of pathogens such as bacteria, virus, vectors, parasites etc.
    E.g. Cholera, Malaria, Chickenpox.
Non-infectious disease
  1. They are non-communicable diseases
  2. They are caused by internal factors.
    • Malfunctioning of organs,
    • Genetic causes,
    • Hormonal imbalance and
    • Defective Immune system
      E.g. Cancer, Diabetes.

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