Q1
What causes communicable diseases?
APathogens like bacteria and viruses
BOnly lifestyle factors
CNothing specific
DOnly genetics
ICSEClass 9 (ICSE)BiologyCh 17 · Topic 2
Practice and Revision - Diseases - Cause and Control
Let us practise and revise what we learned about diseases - cause and control. Diseases can be caused by pathogens (communicable) or other f
Core concept
Communicable diseases, caused by pathogens like bacteria, viruses, and fungi, can spread from person to person through various means.
How it works
Non-communicable diseases, like diabetes or heart disease, aren't caused by pathogens and don't spread between people, often linked to lifestyle factors.
Why it matters
Prevention of communicable diseases includes vaccination, good hygiene, and avoiding contact with infected individuals when possible.
Key detail
Understanding disease causes and control methods is essential for public health, helping reduce disease spread and improve overall community health.
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Quick notes
• Communicable diseases are caused by pathogens.
• Pathogens: bacteria, viruses, fungi.
• These diseases spread between people.
• Non-communicable diseases aren't caused by pathogens.
• Examples: diabetes, heart disease.
• They're often linked to lifestyle factors.
• Prevention includes vaccination and hygiene.
• This is essential for public health.