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Immunity and Healthcare

Biology · Kerala SSLC (Class 10) · English Medium · 40 questions and answers

Sample questions

Q: What is immunity?

A: Immunity is the ability of the body to resist and fight against disease-causing germs (pathogens) and harmful substances.

Q: What is a pathogen?

A: A pathogen is a disease-causing microorganism, such as a bacterium, virus, fungus or protozoan.

Q: What is an antigen?

A: An antigen is any foreign substance (usually on the surface of a pathogen) that triggers an immune response in the body.

Q: What are antibodies?

A: Antibodies are protective proteins produced by lymphocytes in response to antigens; they bind to and neutralise pathogens.

Q: Which cells are the main defenders in the immune system?

A: The white blood cells (leucocytes), especially the lymphocytes, are the main defenders of the body.

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