Practice
- What is the difference between enzymes?
- What is a substrate?
Activation Energy
Function
- All chemical reactions need energy to start them
- The energy to start a chemical reaction is called Activation Energy
- The difference between enzymes is their shape
- Lock and Key Model
- Lock = enzyme
- Key = substrate
- Substrates are always the reactants
Activation Energy & Enzymes
- Enzymes catalyze chemical reactions by lowering the activation energy needed
Practice
Practice
- What is activation energy?
- How do enzymes speed up chemical reactions?
Enzyme Function
- Enzymes control chemical reactions in your body
- Normal chemical reactions are slow
- Enzymes catalyze (speed up) the reactions
- Example: enzymes speed up digestion so it takes 2 days instead of 200 days
Practice
Denaturing Enzymes
- Draw the chemical equation for: Starch turns into sugar
- Draw the chemical equation for: Sugar turns into water and Carbon dioxide?
- Homeostasis = maintaining a stable internal environment
- 98.6 degrees F
- 7.4 pH
- Change either of these and enzymes will denature (slow down, and stop = you die)
Chemical Reaction
Practice
- What does denature mean?
- Why is it bad to denature enzymes?
- Atoms are rearranged
- H + O H2O
Reactants Products
(Substrate)
Enzymes
Category
Quick Write
- Enzymes are Proteins
- Proteins = tools
- 1 tool for every job
- 1 protein for every job
- What is/are the monomer(s) for lipids?
- What are the monomer and polymer for proteins?
- What are some functions of proteins?
Closure Quiz
- What is a substrate?
- Draw the toothpickase reaction.
- What do enzymes do?