Enzyme Action Flashcards
What are metabolic reactions?
The sum of all reactions in the organism
What are anabolic reactions?
Building up larger molecules
What are catabolic reactions?
Breaking down molecules
What are enzymes?
Biological catalysts that speed up chemical reactions
Name the energy that is required to start a reaction.
Activation energy
What are enzymes’ effect on the activation energy of a reaction?
Enzymes lower Ea
Name the area on the enzyme that binds to and reacts with the substrate.
Active site
The active site has a _____ shape to the substrate.
Complementary/Specific
Name the two models used to illustrate enzyme actions.
Lock-and-key + Induced fit
Name the structure where the enzyme and substrate are bound together.
Enzyme-substrate complex
What is the difference between the lock-and-key model and the induced fit model?
Lock-and-key: rigid, no movement; Induced fit: slight movement of active site to allow better binding to substrate
Name an intracellular enzyme.
Catalase
Name an extracellular enzyme.
Amylase/trypsin
