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Defence cells in the blood

Defence cells in the blood

Blood consists of plasma carrying red blood cells, white blood cells and platelets. Red blood cells carry oxygen, while white blood cells defend against pathogens and platelets help prevent pathogen entry by forming clots.

6.3.8 White blood cells and platelets Lesson

  1. GCSE
  2. /Biology
  3. /6.3.8 White blood cells and platelets

Step-by-step lessons on OCR GCSE Biology 6.3.8 White blood cells and platelets. Each one builds up to exam-style questions. Start with the foundational topics and build up to the higher-tier material.

Lessons