Exam Board: Cambridge International
Course: AS Biology
Unit: Biomolecules
Lesson: Lipids
File format: PowerPoint
Sylabbus code: 2.2
Lipids function as a concentrated energy source, provide insulation and organ protection, and aid in buoyancy control for marine organisms. They contribute to cell membrane structure, vitamin absorption, and hormone synthesis. Fats and oils enhance food flavor, texture, and satiety. Saturated fatty acids are solid at room temperature with straight chains, while unsaturated fatty acids are liquid with double bonds. The emulsion test, using ethanol, detects lipids in substances. Ester bonds form through alcohol and carboxylic acid esterification, and they can be hydrolysed by water.
There is a final quiz with answers for the teacher in the comment box below the slide.
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