enzymes. what is an enzyme? organic catalyst protein molecule
DESCRIPTION
Speed up chemical reactions by lowering the activation energy What is the function of an enzyme?TRANSCRIPT
Enzymes
What is an enzyme?• Organic catalyst• Protein molecule
Speed up chemical reactions by lowering the activation energy
What is the function of an enzyme?
Activation Energy
• energy required to start all chemical reaction
• How can all reactions require energy, if some are considered exergonic/exothermic?
Induced-Fit Model
Factors that affect enzyme functioning
1. Temperature2. pH 3. Enzyme concentration4. Substrate concentration5. Cofactors/coenzymes6. inhibitors
Cofactors/Coenzymes
Feedback Inhibition
• End product controls action of enzyme• When end product binds to enzyme, there is a
change of shape and enzyme no longer functions