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Human Health and Disease

Tripura Board · Class 12 · Biology

Complete topic list for Human Health and Disease in Tripura Board Class 12 Biology. Key concepts, sub-topics, and what to focus on for board exams.

47 questions50 flashcards5 concepts

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A detailed flowchart illustrating the complex life cycle of the Plasmodium parasite, involving both human and female Anopheles mosquito hosts, highlighting key stages like sporozoites, merozoites, gam
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4 Topics · Tripura Board Class 12 Biology

Topics in Human Health and Disease

1

Concept of Health and Disease

  • Health is complete physical, mental, and social well-being
  • Early Greeks and Ayurveda believed in 'humour' theory of health
  • William Harvey's discovery of blood circulation disproved the humour hypothesis
2

Common Human Diseases

  • Typhoid: Caused by Salmonella typhi, symptoms include sustained high fever (39-40°C), weakness, stomach pain
  • Pneumonia: Caused by Streptococcus pneumoniae and Haemophilus influenzae, affects alveoli
  • Common Cold: Caused by rhinoviruses, affects nose and respiratory passage
3

Immunity

  • Immunity is the overall ability to fight disease-causing organisms
  • Two types: Innate immunity (non-specific, present at birth) and Acquired immunity (specific, develops after exposure)
  • Innate immunity has four barriers: Physical, Physiological, Cellular, and Cytokine
4

Vaccination and Immunization

  • Active immunity: Antibodies produced in host body (slow but long-lasting)
  • Passive immunity: Ready-made antibodies given directly (quick but temporary)
  • Vaccination principle based on immune memory

Key Concepts

Health is complete physicalDiseases are classified as infectious (transmissibleTyphoid fever (Salmonella typhi) causes sustainedCommon cold caused by rhinoviruses affectsMalaria is caused by Plasmodium species

Frequently Asked Questions

What are the important topics in Human Health and Disease for Tripura Board Class 12 Biology?
Human Health and Disease covers several key topics that are frequently asked in Tripura Board Class 12 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Human Health and Disease — Tripura Board Class 12 Biology?
Understand the core concepts first, then work through the 47 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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All 13 chapters — Tripura Board Class 12 Biology Syllabus

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