Answer: Ribose.
- A Deoxyribose
- B Glucose
- C Ribose
- D Fructose
Correct answer: C. Ribose
Explanation: RNA contains ribose sugar. DNA contains deoxyribose (lacks an oxygen at the 2' carbon). This difference makes DNA more stable.
As substrate concentration rises, reaction rate increases steeply at first, then plateaus at Vmax once every enzyme molecule is working at full capacity; Km is the substrate concentration giving half-maximal rate, and a LOWER Km means the enzyme reaches that rate with less substrate (higher affinity).
Concept context
Carbohydrates, proteins, lipids, nucleic acids, and enzyme kinetics. Essential foundation for understanding metabolism.