Human Diseases
Kerala Board · Class 12 · Biology
Summary of Human Diseases for Kerala Board Class 12 Biology. Key concepts, important points, and chapter overview.
Overview
Human diseases represent any condition that interferes with the normal functioning of the body, affecting physical, physiological, psychological, or social well-being. This chapter explores the comprehensive classification of diseases, their causes, modes of transmission, prevention strategies, and
Key Concepts
Diseases are broadly classified into Congenital
Diseases are broadly classified into Congenital diseases (present from birth due to genetic abnormalities) and Acquired diseases (develop after birth)
Communicable diseases spread through Direct transmission
Communicable diseases spread through Direct transmission (contact, droplet infection, soil contact, animal bites) and Indirect transmission (vectors l
Different pathogens cause specific diseases
Different pathogens cause specific diseases: Bacteria (cholera, tuberculosis, leprosy), Viruses (measles, influenza, AIDS), Protozoa (malaria, amoebic
Cancer represents uncontrolled
Cancer represents uncontrolled, abnormal cell growth characterized by ability to invade adjacent tissues and metastasize to distant organs. It involve
STDs are infections transmitted through sexual
STDs are infections transmitted through sexual contact, caused by bacteria (gonorrhea, syphilis), viruses (herpes, HIV/AIDS), protozoa (trichomoniasis
Learning Objectives
- Define disease and classify different types of human diseases
- Distinguish between communicable and non-communicable diseases with examples
- Understand the difference between pathogen and parasite, infection and infestation
- Analyze symptoms, causative agents, and prevention methods for major infectious diseases like malaria, tuberculosis, influenza, and hepatitis
- Identify degenerative diseases such as hypertension, coronary heart disease, diabetes, and osteoporosis
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What are the important topics in Human Diseases for Kerala Board Class 12 Biology?
Human Diseases covers several key topics that are frequently asked in Kerala 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 Diseases — Kerala Board Class 12 Biology?
Start by understanding all key concepts. Practise previous year questions from this chapter. Revise formulas and definitions regularly. Use flashcards for quick revision before the exam.
Sources & Official References
- Kerala Board of Public Examinations — keralapareekshabhavan.in
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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