Answer: Phospholipid.
- A Triglyceride
- B Wax
- C Phospholipid
- D Steroid
Correct answer: C. Phospholipid
Explanation: Phospholipids form the lipid bilayer of cell membranes. Their hydrophilic head and hydrophobic tail arrange into a bilayer in water.
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.