A pathogen strain R has antigen A. A different strain, S, has antigen B. An antibody made by a lymphocyte binds to antigen A. A phagocyte has engulfed and digested strain R.
Explain whether the antibody described would bind to strain S and whether a phagocyte could engulf and digest strain S.
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.