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Six facts about enzymes

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  • They reduce the activation energy needed for a reaction to proceed and produce products.

  • Enzymes have a region called an active site. The site is the "lock" into which a substrate "key" fits.

  • The enzyme then fits closely around the substrates. This is called induced fit.

  • Enzyme activity is affected by substrate type, temperature, pH and substrate concentration.

The energy needed for bonds to be broken and new bonds to form. Co-factors and coenzymes attach to enzymes and increase their activity.