AS Level Biology - The Immune System

**This Powerpoint specifically uses the Cambridge AS Level Biology Syllabus and covers all criteria for – The Immune System
**
Students will be able to -

1 describe the mode of action of phagocytes (macrophages
and neutrophils)

2 explain what is meant by an antigen (see 4.1.3) and state the
difference between self antigens and non-self antigens

3 describe the sequence of events that occurs during a primary
immune response with reference to the roles of:
• macrophages
• B-lymphocytes, including plasma cells
• T-lymphocytes, limited to T-helper cells and T-killer cells

4 explain the role of memory cells in the secondary immune
response and in long-term immunity

**Every Powerpoint includes learning objectives, a starter and plenary, suitable activities and review questions with mark scheme. We also provide a FREE pdf version of the file so it can easily be printed for students as a handout or uploaded to the school VLE system
**
Bring your Cambridge AS Level Biology lessons to life with our expertly designed teaching resources. Each unit is tailored to the latest syllabus, offering ready-to-use lesson plans, engaging experiments, and visually clear notes that save hours of prep time. Whether you’re new to the course or refining your approach, The Science Shelf gives you everything you need to boost student understanding and exam success — all in one place.