1) A) With example, explain the four levels of protein structure. [4 Marks]
B) Draw the diagram for omega-6 fatty acid. Why are omega 3 and omega 6 fatty acids called essential fatty acids? [1 Mark]

2 What is mitosis and meiosis? Compare and contrast between mitosis and meiosis. (you can use diagrams to help you explain) [5 Marks]

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