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Edexcel A-Level Biology AS 4.3 Starch Cellulose and Cellulose Microfibrils Questions

Name alpha- or beta-glucose and bond positions, distinguish amylose from amylopectin and connect chain arrangement or hydrogen bonding to storage or wall strength.

Syllabus
First assessment 2019
Course
Biology YBI11
Level
AS

Exam points

  • Describe starch through alpha-glucose, amylose, amylopectin and glycosidic bonds.
  • Distinguish cellulose through beta-glucose, beta-1,4 bonds and straight chains.
  • Explain microfibril strength through parallel cellulose chains and hydrogen bonds.

Edexcel A-Level Biology AS 4.3 Starch Cellulose and Cellulose Microfibrils Questions question 1

[Maximum number: 3]

Plants and animals are made of cells.

Starch can be stored in different parts of a plant cell.

Describe the structure of starch.

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