Liver cells store glucose as glycogen. Glycogen is broken down when the body needs more glucose. Which statement describes what happens when glycogen is broken down?
A monomer is broken down into many polymer molecules.
A polymer is broken down into many glucose monomers.
A polymer is broken down into many amino acid monomers.
Glucose monomers are joined together to make a polymer.
113 exam-style questions on OCR GCSE Biology 1.3 Respiration, covering 1.3.1 Cellular respiration supplies ATP, 1.3.2 Aerobic and anaerobic respiration, 1.3.3 Sugars and carbohydrates, 1.3.4 Amino acids and proteins, and 1.3.5 Fatty acids and lipids. Each one has a worked solution and a mark scheme showing where the marks go.