Carbohydrates and Glycoconjugates · Zoology

Starch is composed primarily of:

  1. Only amylose units
  2. Only amylopectin units
  3. Amylose and amylopectin
  4. Cellulose and hemicellulose
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Correct answer: Amylose and amylopectin

Starch consists of two glucose polymers: amylose, a largely linear chain linked by α-1,4 bonds, and amylopectin, a branched chain with additional α-1,6 branch points. The ratio of amylose to amylopectin varies by plant source.

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