Short answerModerate1 mark
1(h)
State the main function of the following:
Lymphocytes of blood
Topic: Lymphocytes
Previous-year question practice database
Answer
Exam answer
They PRODUCE ANTIBODIES, which neutralise antigens and destroy disease-causing germs, giving the body its IMMUNITY.
Explanation
Lymphocytes fight by CHEMICAL means. Each antibody is SPECIFIC — it matches one antigen only, like a key to a lock.
THE CONTRAST with the other white cells is worth stating: NEUTROPHILS fight by PHAGOCYTOSIS, physically engulfing germs. Lymphocytes fight chemically with antibodies.
Because antibodies are specific and are REMEMBERED after the first exposure, lymphocytes are the basis of IMMUNITY — and of how VACCINATION works.
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