Answer: Starch.
- A Proteins
- B Fats
- C Starch
- D Cellulose
Correct answer: C. Starch
Explanation: Amylase is a carbohydrate-digesting enzyme that breaks down starch (and glycogen) into maltose and dextrins. Salivary amylase begins digestion in the mouth.
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.