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🔬 Biology  ·  Biomolecules  ·  NEET

Which of the following is the most abundant organic compound on Earth?

Answer: Cellulose.

  • A Glucose
  • B Starch
  • C Cellulose
  • D Glycogen

Correct answer: C. Cellulose

Explanation: Cellulose is the most abundant organic compound on Earth. It is the main structural component of plant cell walls and is produced in enormous quantities.

Enzyme Kinetics: Rate vs Substrate Concentration[Substrate]Reaction rateVmaxKm½VmaxCurve flattens at high [S]: ALL enzyme active sites are occupied (saturation)

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.

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