Immunity powerpoint
- 1. Why do you think we still get ill? Each type of microorganism has different shape antigens If your body has not seen the MO before it will not recognise the antigens. Your body cannot fight the infection until it makes the right shape antibody. J . Groves 2010 www.elevate-education.co.uk Tuberculosis Chlamydia Food Poisoning
- 2. J . Groves 2010 www.elevate-education.co.uk Antigens on the cell surface, different for each type of MO Microorganism A microorganism gets into the body
- 3. J . Groves 2010 www.elevate-education.co.uk LymphocyteMicroorganism makes Antibodies White Blood Cells called Lymphocytes produce antibodies that will stick to the antigens on the microorgansim But the body has not encountered this type of microorganism before so there are no lymphocytes that make the right shape antibodies. FAIL
- 4. J . Groves 2010 www.elevate-education.co.uk Microorganism The microorganism is not destroyed and starts to reproduce. As the number of microorganisms increases you start to show symptoms of the disease
- 5. J . Groves 2010 www.elevate-education.co.uk Microorganism Eventually a lymphocyte produces the right type of antibody Lymphocytemakes Antibodies that fit the antigensSuccess
- 6. J . Groves 2010 www.elevate-education.co.uk Microorganism The body makes copies of the lymphocytes which make the right type of antibody These also start to make antibodies. Antibodies bind to the antigens on the microorganism
- 7. J . Groves 2010 www.elevate-education.co.uk The antibodies cause the microorganisms to clump together
- 8. J . Groves 2010 www.elevate-education.co.uk Then the Phagocyte can engulf the microorganisms Phagocyte
- 9. J . Groves 2010 www.elevate-education.co.uk The phagocyte digests the microorganisms using digestive enzymes Phagocyte
- 10. After you recover from a disease some lymphocytes that produce the right shape antibody remain in the blood. We call these memory cells. J . Groves 2010 www.elevate-education.co.uk