Students should perform the tests Biochemical tests using Benedict's Students could use, and for reducing and non-reducing solution for reducing sugars and interpret the results of, sugars, be able to describe the non-reducing sugars and qualitative tests for method and results for the iodine/potassium iodide for reducing sugars, Biochemical tests and use them to starch. sugars and starch. correctly identify unknown substances. They can complete Assignment 3: Identifying Carbohydrates from Biochemical Tests. Student Book Required One hour lessons Learning Outcomes Specification Content Skills Covered Section Practicals CHAPTER 2 Lipids and Proteins (9 hours) – 1 Lipids - Triglycerides Describe the structure of a 3.3.1 Lipids 2.1 triglyceride Students should recall that lipids Triglycerides and phospholipids are biological molecules Describe, draw and label the are two groups of lipid. containing C, H and O. They condensation reactions should recognise Triglycerides as a required to form these Triglycerides are formed by the group of lipid formed by molecules condensation of one molecule of condensation reactions between glycerol and molecules of glycerol and fatty acid chains and fatty acid. Describe how of a be able to draw and label this fatty acid maybe saturated reaction and the formation of A condensation reaction between or unsaturated ester bonds. They may be able to glycerol and a fatty acid (RCOOH) synthesise diagrams of the forms an ester bond. hydrolysis reactions which break these molecules down. Students The R-group of a fatty acid may be should recognise saturated, saturated or unsaturated. unsaturated and polyunsaturated fatty acids and describe the presence or absence of double Students should be able to: bonds within them. Molymods can be used to make glycerol,
Students should perform the tests for reducing and non-reducing sugars, be able to describe the method and results for the Biochemical tests and use them to correctly identify unknown substances. They can complete Assignment 3: Identifying Carbohydrates from Biochemical Tests. Biochemical tests using Benedict's solution for reducing sugars and non-reducing sugars and iodine/potassium iodide for starch. Students could use, and interpret the results of, qualitative tests for reducing sugars, sugars and starch. One hour lessons Learning Outcomes Specification Content Skills Covered Student Book Section Required Practicals CHAPTER 2 – Lipids and Proteins (9 hours) 1 Lipids - Triglycerides Students should recall that lipids are biological molecules containing C, H and O. They should recognise Triglycerides as a group of lipid formed by condensation reactions between glycerol and fatty acid chains and be able to draw and label this reaction and the formation of ester bonds. They may be able to synthesise diagrams of the hydrolysis reactions which break these molecules down. Students should recognise saturated, unsaturated and polyunsaturated fatty acids and describe the presence or absence of double bonds within them. Molymods can be used to make glycerol, Describe the structure of a triglyceride Describe, draw and label the condensation reactions required to form these molecules Describe how of a fatty acid maybe saturated or unsaturated 3.3.1 Lipids Triglycerides and phospholipids are two groups of lipid. Triglycerides are formed by the condensation of one molecule of glycerol and molecules of fatty acid. A condensation reaction between glycerol and a fatty acid (RCOOH) forms an ester bond. The R-group of a fatty acid may be saturated or unsaturated. Students should be able to: 2.1
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