Bio: Lab 4 - Enzymes

Complex Protein catalyst that speed metabolic reactions by lowering the activation energy required. Each has only 1 reaction that it works with. I substrate. It is not used up in the reactions. All reactants in a cell have an enzyme.

Reactants in an enzymatic reaction.

Reactants undergo a change
Products are the results of the change

Is where substrates (reactants) bind with an enzyme

When substrate is broken down

When a substrates are combined or put together

Enzyme from potatoes that catalyzes Hydrogen Peroxide
2H₂O₂----catalase------>H₂O + O₂
(Oxygen bubbles released in reaction)
Best at cold temp (in tuber of plant)

In general:
Cold: Slows reaction
Warm: Speeds Reactions
Boiling: Denatures Enzymes, breaks it down, inactive

Higher concentration of enzyme/substrate results in FASTER enzyme activity.
Products will increase

Optimal PH is best for any enzyme (each is different)
Higher or Lower than Optimal affects the structure of the enzyme and hydrogen bonding, reducing activity

Digestive enzyme of the stomach. Breaks down protein called Kappa Casein (in milk). Kappa Casein keeps milk from curdling. Rennin breaks down Kappa Casein to allow milk solids to form in stomach. Slows digestion! Optimal temperature is Warm (body temperature)