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7 Cards in this Set

  • Front
  • Back

What are enzymes

Globular proteins that act as biological catalysts, speeding up metabolic activity

What are the two models of the active site

Lock and key theory


Induced fit theory

Difference between lock and key and induced fit theory

Induced fit argues active site is flexible and can change shape slightly fitting more closely around the substrate.

Activation energy

Energy needed to be supplied before reaction starts

what are the three steps of splitting a substrate molecule?

1. random movement causes the enzyme and substrate to collide, and substrate enters the active site.




2. Enzyme-substrate complex forms. Charged groups attract, distorting the substrate and aiding bond breakage or formation.




3. products released from the active site

catabolic reactions

breaking down

anabolic reactions

building up