Science 30 – Blood and Immunity take-home quiz Answer questions as completely as possible: you will need to use your notes, the textbook, and a little bit of on-line searching! 1. The formed portion of blood contains three kinds of cells: name them and explain their function (3 marks) Cell Function 2. Explain how a blood clot forms. (2 marks) 3. Match the immune cell with its function. (3 marks) Immune Cell i. Killer T cell ii. Suppressor T cell iii. Macrophage iv. B-cell v. Memory T cell Function Match Engulfs disabled pathogens or other dead cells Secretes antibodies Detects and directly destroys infected cells Keeps a copy of successful antibodies for later use Reduces immune system activity after infection is cleared 4. Explain how the polio vaccine causes lasting immunity to the polio virus. (4 marks) 5. You accidentally step on a push pin and it punctures your skin, allowing a PATHOGENIC bacteria into your body. Outline the steps involved in the immune response. (4 marks) Science 30 – Blood and Immunity take-home quiz 6. 2 populations of mice are infected with a pathogen and their blood is tested for immune system activity by counting white blood cells present. White blood cell count Mouse Before infection 1 day after 3 days after 6 days after A (Normal) 15 30 35 15 B (Mutant) 15 35 40 45 Compare the mutant mouse to the normal mouse – suggest a reason for its abnormal immune system response. (3 marks) 7. Explain what an AUTOIMMUNE DISEASE is: why do they happen? Include an example. (3 marks)
