Topic 2.3: Carbohydrates and Lipids
Essential Idea: Compounds of carbon, hydrogen and oxygen are used to supply and store energy.
At SHS, Topic 2.3 is taught in the following class unit(s):
STATEMENTS & OBJECTIVES
2.3.U1 Monosaccharide monomers are linked together by condensation reactions to form disaccharides and polysaccharide polymers.
2.3.U2 Fatty acids can be saturated, monounsaturated and polyunsaturated.
2.3.U3 Unsaturated fatty acids can be cis or trans isomers.
2.3.U4 Triglycerides are formed by condensation from three fatty acids and one glycerol.
2.3.A1 Structure and function of cellulose and starch in plants and glycogen in humans.
2.3.A2 Scientific evidence for health risks of trans fat and saturated fatty acids.
2.3.A3 Lipids are more suitable for long term energy storage in humans than carbohydrates.
2.3.A4 Evaluation of evidence and the methods used to obtain the evidence for health claims made about lipids.
2.3.S1 Use of molecular visualization software to compare cellulose, starch and glycogen.
2.3.S2 Determination of body mass index by calculation or use of a nomogram.
2.3.NOS Evaluating claims- health claims made about lipids in diets need to be assessed.
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