Enzymes Flashcards
Catalysts will…
Be able to be reused because they are not used in the reaction
Catalysts
Only work on one particular reaction because they are specific
Enzymes are…
Biological catalysts
Enzymes are made up of…
Long chains of amino acids so are proteins
Collision Theory
In order for chemical reactions to occur, particles must collide with enough energy
Catalysts are…
Chemicals which speed up reactions
Activation Energy is…
The minimum amount of energy particles must have in order to react
Activation energy part 2
Catalysts (including enzymes) work by lowering the activation energy, therefore increasing the chance of a reaction
Lock and Key
The active site and substrate have complimentary 3-D shapes
Substrate is…
The reactant
When the substrate and active site join…
It forms the enzyme-substrate complex
What affects enzyme rate?
- Heat
- pH
Temperature affecting enzymes
As temperature increases, particles have more kinetic energy and are likely to collide.
However, higher than 37 degrees, the amino acid of the active site starts to unravel, changing its shape. The enzyme is said to be denatures
