Unit 2 Quiz 5 minutes of silent study time.

Unit 2- Biomolecules 2.3 Enzymes

Written Response #7 Complete the chart: Organic Molecule Subunits Function Carbohydrates Lipids Proteins Nucleic Acids

DEHYDRATION SYNTHESIS Chemical Reactions reactant product build it up break it down DEHYDRATION SYNTHESIS HYDROLYSIS 2 min. 2 min.

Enzymes Enzymes help increase the rate of reaction. enzyme substrate Active Site- substrate & enzyme meet. Substrate- reactants that are put together( synthesis) or broken down (decomp) Enzyme-Substrate Complex- The joining of the enzyme and substrate together Activation Energy- Energy needed to start rxn. substrate active site enzyme

Enzymes 1. Enzymes are ______ Proteins They are made of amino acids!

Enzymes Specific 2. Enzymes are _____________ Shape matters!

Enzyme Specificity denature temperature pH

Enzymes catalysts 3. Enzymes are _____________. Enzymes SPEED UP chemical reactions by LOWERING the ACTIVATION ENERGY. High Activation Energy= Slow Rxn Low Activation Energy= Fast Rxn *Graph with an enzyme will have a “smaller” bump for activation energy.

Where does enzyme activity appear to be highest?

What will happen to enzyme activity if I lower the pH by adding acid?

Enzymes reusable 4. Enzymes are _____________. Enzymes shape doesn’t change after a reaction. They can be used repeatedly forever as long as the shape doesn’t change. reusable Cycle of an enzyme used over and over How can enzymes shape be changed and make them NOT REUSABLE? Temp & pH

5. Enzymes help with _____________ & ___________. digestion 5. Enzymes help with _____________ & ___________. synthesis Break down Proteins into…. _________________ Break down Carbohydrates into … _____________ Break down Nucleic Acids into … ______________ Break down Lipids into … ____________________ amino acids sugars nucleotides fatty acids & glycerol

Enzyme Cut Out - Activity Complete parts A-C in your notebook. Be sure to give each section a header such as: Part A Complete part D first and then cut it out and glue it into your notebook. Once you have completed this assignment show it to me so that I may check for completeness.

Naming Enzymes These are all enzymes: Amylase Sucrase Lactase Peroxidase Fructase What pattern do you notice?

Enzymes have the ending -ase Naming Enzymes These are all enzymes: Amylase Sucrase Lactase Peroxidase Fructase What pattern do you notice? Enzymes have the ending -ase

Potato contains catalase – an enzyme! That nearly all living things contain that are exposed to oxygen—its catalyzes Hydrogen Peroxide to Water & Oxygen Bubbles =Enzyme Activity Potato + Peroxide (H202) WR: What type of reaction is this? (break down or build up) Use the correct term

Naming Sugars These are all sugars: Glucose Sucrose Lactose Galactose Fructose What pattern do you notice?

Naming Sugars Sugars have the ending -ose These are all sugars: Glucose Sucrose Lactose Galactose Fructose What pattern do you notice? Sugars have the ending -ose

Lactose Intolerance Written Response #8 Lactose intolerance is the inability to break down lactose (the sugar in milk) due to the lack of presence of lactase (the enzyme that breaks down lactose). Write a paragraph and include pictures to describe what is happening internally for a person with lactose intolerance compared to someone who is not intolerant to lactose. * Remember the enzyme substrate complex*

Need for Speed Enzyme Activity

2.3 Properties of Enzymes - Lab

Written Response #09 What do enzymes lower, allowing reaction to occur at body temperature? Activation Energy What organic compound are most enzymes? Proteins What is the name of the target chemical on which the enzyme works? Substrate Is the active site located on the enzyme or the substrate? Enzyme Name two characteristics of enzymes. Specific, Reusable