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Enzymatic catalysis reduces energy consumption because enzymes work at

  • A.near ambient temperature and pressure
  • B.high temperature but low pressure
  • C.high pressure but low temperature
  • D.any temperature without loss of activity

Answer: A

Correct answer: near ambient temperature and pressure

Enzymes evolved to work in living cells, so they operate at moderate temperature, near-neutral pH and atmospheric pressure. A transformation that would otherwise need heating and pressure can therefore be run at ambient conditions, which saves energy directly and often improves selectivity so that protecting groups become unnecessary.

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