An engaging lesson presentation (37 slides) that consists of 2 lessons which look at the defence mechanisms found in the 1st line of defence and ensures students understand how the different white blood cells defend the body from pathogens.
Lesson 1: This lesson looks at the skin, cilia, stomach acid, tears and ear wax that are found in the 1st line of defence. Time is taken to look at the details of each of the mechanisms and links made to other parts of Biology, such as stomach acid providing the optimum pH for enzymes.
Lesson 2: This lesson looks at how the phagocytes and lymphocytes defend against pathogens. There is a focus on key terminology such as engulf, antibodies and specific and students will learn how the use of memory cells after the primary response leads to immunity.
There are regular progress checks through both lesson so that students can assess their understanding.
This lesson has been written for GCSE students but can be used with both KS3 and A-level Biology. However, if you are looking for a lesson for A-level Biology with even greater detail, then my alternative resources "non-specific" and "specific immune response" may be more suitable