HIV is a virus that destroys lymphocytes. A person with untreated HIV often develops tuberculosis. Which statement best explains why?
Tuberculosis bacteria are only able to reproduce inside cells that contain HIV
The person produces fewer antibodies, so the tuberculosis bacteria are not destroyed
The person's allergic reaction to the HIV virus also damages the lungs and airways
Both HIV and tuberculosis are non-communicable diseases that affect the lungs
179 exam-style questions on AQA GCSE Biology 2.2 Animal tissues, organs and organ systems, covering 2.2.1 The human digestive system, 2.2.2 The heart and blood vessels, 2.2.3 Blood, 2.2.4 Coronary heart disease: a non-communicable disease, 2.2.5 Health issues, 2.2.6 The effect of lifestyle on some non-communicable diseases, and 2.2.7 Cancer. Each one has a worked solution and a mark scheme showing where the marks go.