This powerpoint presentation covers Topic 6.3 (Immune System) in the IB Biology curriculum. Each slide is labelled with the specific learning objective and video links are provided in the slide notes where appropriate.
The slides are formatted to print well for handouts or revision and I can provide a pdf version upon request.
As always, please let me know if you have any suggestions for improvements. These are always a work in progress!
**IB Biology Learning Objectives
6.3.1 – Define pathogen.
6.3.2 – Explain why antibiotics are effective against bacteria but not against viruses.
6.3.3 – Outline the role of skin and mucous membranes in defense against pathogens.
6.3.4 – Outline how phagocytic leucocytes ingest pathogens in the blood and in body tissues.
6.3.5 – Distinguish between antigens and antibodies.
6.3.6 – Explain antibody production
6.3.7 – Outline the effects of HIV on the immune system.
6.3.8 – Discuss the cause, transmission and social implications of AIDS.