AQA 3.1 biological molecules - 10 good practice questions on carbohydrates

3.1.2

Can you

  • Draw the formation and hydrolysis of a glycosidic bond

  • Name the 3 disaccharides and their components

  • Explain why polysaccharides are good storage molecules ?

  • Explain why are branched polysaccharides good ?

  • Explain how are the properties of cellulose explained by the structure ?

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Carbohydrates, lipids and Food tests - Resources to Test your understanding

Powerpoints, videos and animations, a self marking quiz on lipids and carbohydrates.

Some tips

  • Number the carbons and understand when and how a 1,4 glycosidic bond forms.

  • Why it matters that you can form a 6,1 bond in order to branch a polysaccharide.

  • Why does it matter that polysaccharides are insoluble and mono and di-saccharides are soluble.

  • What is the consequence of Beta glucose forming cellulose

  • Which molecules have a 5 carbon sugar in mammals ?

  • Can you explain why fatty acids are non-polar and what is the consequence for the formation of cell membranes

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