This concise lesson has been written to cover the detail of specification point 14.1 (d) of the CIE International A-level Biology specification which states that students should be able to describe the deamination of amino acids and outline the formation of urea in the urea cycle. Over the course of the lesson, students will discover that the amino group is removed during deamination to produce a keto acid and ammonia. They are encouraged to consider why the ammonia cannot accumulate in the body before looking at the different stages of the urea cycle. Instead of simply giving them the diagram of the urea cycle, students are given the opportunity to study the cycle when it is split into one of the three stages but are not allowed to draw. This task will challenge the students on their observational skills and then their ability to apply when they are given a question on the cycle. Included throughout the lesson are a selection of understanding checks and prior knowledge checks which allows the students to assess their progress against the current topic as well as challenging them to make links to previously covered topics.
This lesson has been designed for students on the CIE International A-level Biology course and ties in well with the other uploaded lessons on topic 14.1 (Homeostasis in mammals)
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