Carbohydrates + questions

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Notes gained from college, OCR Heineman biology textbook and revision guide, CGP OCR biology revision book and other resources found in the college library.

The questions have either been made up or from the resources.

Good luck in your exam!

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Most carbohydrates are large, complex molecules composed of long chains of monosaccharaides. Single monosaccharaides are
also carbohydrates.

Glucose is a hexose sugar- a monosaccharaide with six carbon atoms in each molecule.

1. Make sure you recognise and draw the abbreviated (simple) forms of alpha and beta glucose.…

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It is coiled in a spiral-straight unbranched helix and this is due to the angles of the glycosidic bonds. This makes it
compact and so easy for storage.
It is the main molecule of starch.
It is insoluble and so doesn't affect water potential or reactions.
It is…

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1. Draw the structure of an alpha glucose molecule.
2. What is a disaccharide?
3. What is the function of glycogen?
4. Describe, with the aid of a diagram, how glycosidic bonds are formed and broken in living organisms. (7 marks)
5. Describe how the structure of starch makes…


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