Which of the following describes an autoimmune disease?
A condition in which the immune system fails to distinguish self from non-self, targeting the body's own cells.
A state where a pathogen actively infects and destroys host white blood cells.
An inherited genetic trait that prevents the body from producing antibodies.
A standard immune response to a vaccine where long-term active immunity is established.
40 exam-style questions on OCR A A Level Biology Communicable diseases, disease prevention and the immune system. Each one has a worked solution and a mark scheme showing where the marks go.