Immunity and Healthcare
Kerala Board · Class 10 · Biology
Flashcards for Immunity and Healthcare — Kerala Board Class 10 Biology. Quick Q&A cards covering key concepts, definitions, and formulas.
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What is the WHO definition of health?
Answer
According to the World Health Organisation, health is a complete state of physical, mental and social well-being. It means not merely the absence of disease or infirmity.
Define immunity and explain its main function.
Answer
Immunity is the ability of the body to prevent the entry of pathogens and to destroy those that have already entered. It protects the body from harmful substances including pathogens, pollen grains, d…
What are antigens? Give examples.
Answer
Antigens are anything, including pathogens, which enter the body and cause diseases. Examples include pathogens, pollen grains, dust, certain food items, and chemicals.
Differentiate between innate immunity and acquired immunity.
Answer
Innate immunity is the natural immune mechanism that exists in the body by birth. It is non-specific and works against all pathogens. Acquired immunity develops after birth, specifically recognizes an…
List five primary level immune mechanisms and their locations.
Answer
1. Wax in the ear 2. Lysozyme in saliva and tears 3. Mucus and mucous membranes 4. Cilia in the trachea 5. HCl in the stomach 6. Sweat and sebum on skin 7. Useful bacteria in digestive and urinary tra…
Explain the process of phagocytosis and name the cells involved.
Answer
Phagocytosis is the process by which white blood cells engulf and destroy pathogens. The cells involved are called phagocytes, mainly neutrophils and monocytes. They form phagosomes which fuse with ly…
How does inflammatory response work as an immune mechanism?
Answer
During injury, cells release histamine and other chemicals that dilate blood vessels, increasing blood flow to the injured area. This brings more white blood cells (monocytes and neutrophils) to fight…
Why is fever considered beneficial to the body?
Answer
Fever is caused by pyrogens released by white blood cells. High temperature helps phagocytes destroy pathogens more quickly, inhibits pathogen growth, and enhances overall immunity. It's a sign that t…
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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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