Which one of the following biomolecules is a polymer/polysaccharide?
- A. Sucrose
- B. Pentose
- C. Lactose
- D. Glycogen
Explanation
Glycogen is a highly branched polymer of thousands of glucose units, stored in liver and muscle as the animal energy reserve. Sucrose and lactose are disaccharides of just two units and pentose is a single five carbon sugar, so none of them is a polymer. The test is whether the molecule can be hydrolysed into many repeating units.
Related questions
Sucrose is formed from glucose and fructose by which type of reaction?
Cellulose and starch are both polymers of glucose, yet humans can digest only starch. The reason is that
Which of the following is a reducing sugar?
Glucose and fructose have the same molecular formula, C6H12O6, but different structures. They are therefore
Glycogen is a better short term storage molecule in animals than starch is in plants partly because glycogen