ENZYMES - WordPress.com

ENZYMES - WordPress.com

ENZYMES What are enzymes? Enzymes are proteins that act as biological catalysts. Their job is to speed up chemical reactions that take place in cells.do they help speed up How chemical reactions?

They lower or reduce the activation energy of the chemical reaction. Why are enzymes known as catalysts? A catalyst is a substance that speeds up the rate of a chemical reaction. Since enzymes speed up

chemical reactions they are known as catalysts. Chemical reactions need a certain amount of energy to get started, this energy is called the activation energy. Why

are enzymes important? All chemical reactions in living organisms require enzymes to work. Synthesis Enzymes Build molecules Dehydration Synthesis Digestive Enzymes

Break down molecules Hydrolysis We cant live without enzymes! enzyme

+ enzyme + Steps of Enzyme Activity Substrate binds to enzyme

Enzyme Enzyme 1. 2.

Enzyme 3. Enzyme is unchanged and free to be reused in another chemical

reaction. Remember: Enzymes can help build or break down molecules. Dehydration Synthesis (building) REACTION

Hydrolysis (break down) REACTION Lock & Key Model Shows Enzyme Specificity

Denature means to change the shape of an enzyme. When this happens the enzyme does not function or work properly. Temperature pH Salinity Factors that

affect Enzyme Activity: 1. temperature 2. pH level X = optimal temperature X 3. enzyme & substrate concentration

X = optimal pH X Enzyme concentration 4. Inhibitors block the active Normal site

If enzyme k3 is denatured, the level of which substance will increase? If enzyme FDH is denatured, the level of which substance will increase?

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