pptx, 2.03 MB
pptx, 2.03 MB
docx, 103.75 KB
docx, 103.75 KB

This lesson describes the ultrastructure of striated muscle with particular reference to sarcomere structure. The PowerPoint and accompanying resource have been planned to cover point (11) of topic 15.1 of the CIE A-level Biology specification.

There are a wide range of key terms and regions in this topic so they are introduced in a fun and memorable way using a variety of activities that include quiz competitions. These are followed by understanding checks to allow students to assess their progress and ensure that any misconceptions are addressed. Connections are made to the upcoming topic of the sliding filament model as the students discover that despite the shortening of the sarcomere (and I band and H zone) during contraction, the fact that the A band remains the same length shows how the filaments slide over each other. The two main tasks of the lesson challenge the students to label a diagram of a sarcomere and then the microscope image as shown in the cover picture.

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