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What do most vaccines contain? A - OCR Gateway - GCSE Biology - Question 13 - 2019 - Paper 1

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Question 13

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What do most vaccines contain? A. Antivirals B. Dead or weakened pathogens C. Specific antibiotics D. White blood cells

Worked Solution & Example Answer:What do most vaccines contain? A - OCR Gateway - GCSE Biology - Question 13 - 2019 - Paper 1

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B. Dead or weakened pathogens

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Most vaccines contain dead or weakened pathogens, known as antigens, which stimulate the immune system to respond and build immunity without causing the disease.

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