Enzyme Action Flashcards
1
Q
Specificity of enzymes
A
-result of the complementary nature between shape of active site and substrate
2
Q
The enzyme substrate complex
A
-forms when an enzyme + substrate join
-only temporarily before the enzyme catalyse the reaction + products are released
3
Q
The lock + key model
A
-enzymes are globular
-shape is determined by tertiary that makes up enzyme
-highly specific
4
Q
Enzyme action
A
- substrate + enzyme have kinetic energy = always moving
-successful collision = enzyme substrate complex
-leaves active site free to catalyse
5
Q
The induced fit model
A
-enzyme + substrate interact with each other
-enzyme and its active site can change shape as the substrate enters the enzyme
-called conformational change
-maximises ability of the enzyme to catalyse the reaction
6
Q
Lower activation energy
A
-speeds up by reducing stability of bonds in reactants
= more reactive
