A scientist separates white blood cells into two samples. Every phagocyte is removed from sample P, and every lymphocyte is removed from sample Q. Pathogens carrying antigens are then added to both samples.
Which statement correctly identifies the defence response lost from each sample?
Sample P loses the production of antibodies specific to the antigens, while sample Q loses the engulfing and digestion of pathogens.
Both sample P and sample Q lose the engulfing and digestion of pathogens.
Both sample P and sample Q lose the production of antibodies specific to the antigens.
Sample P loses the engulfing and digestion of pathogens, while sample Q loses the production of antibodies specific to the antigens.
67 exam-style questions on Edexcel GCSE Biology 8.2 Blood and circulation, covering 8.2.1 Structure and function of the blood, 8.2.2 Structure of blood vessels, 8.2.3 Structure of the heart and circulatory system, and 8.2.4 Cardiac output. Each one has a worked solution and a mark scheme showing where the marks go.