- A Number of carbon atoms
- B Position of -OH group at C1
- C Number of oxygen atoms
- D Type of glycosidic bond only
Correct answer: B. Position of -OH group at C1
Explanation: Alpha-glucose has the -OH group at C1 pointing downward; beta-glucose has it pointing upward. This affects their polymerization: alpha forms starch, beta forms cellulose.
Concept context
Carbohydrates, proteins, lipids, nucleic acids, and enzyme kinetics. Essential foundation for understanding metabolism.