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Chemical Reactions and Enzymes
I. What are enzymes? Your body has lots of reactions!Enzymes: special protein catalysts that speed up specific reactions End in ASE Ex. Lactase digest lactose
The energy needed to get a reaction startedActivation Energy: The energy needed to get a reaction started
III. Lower the Activation EnergyActivation energy is the “start up” energy of a reaction They do not raise the temp! Increase the frequency that the reactants come together to react!
Enzymes Without Enzyme With Enzyme Free EnergyProgress of the reaction Reactants Products Free energy of activation
IV. Enzymes are SpecificThe shape of each enzyme fits the shape of what its acting on SUBSTRATE: the reactant that connects with enzyme ACTIVE SITE: area where the substrate and enzyme meet up
V. Lock and key model Lock is the enzyme Key is the substrateThe lock hole is the active site
Enzymes can only catalyze 1 reaction because they only allow substrates with one particular shape to bond oes not fit!
Factors that Affect the Enzyme PerformanceTemperature pH Salinity Concentration of enzyme or substrate
Temperature Enzymes are PROTEIN Heat too high they can denature
pH Enzymes work best at an ‘optimal’ pH Proteins they can denatureTrypsin
Salinity Too much salt will cause the enzyme(protein) to denature, changing its shape so it will not function
Other factors Concentration of enzyme and concentration ofsubstrate will affect how many reactions can occur. Reactions depend on the limiting factor!
Enzymes are Reusable Enzymes will speed the reaction for a substrateIt will release the product and will work on another substrate
Examples Life is not possible without enzymes! !!!!!!! Lipase ProteaseLactase Sucrase Amylase Life is not possible without enzymes! !!!!!!!
ENZYMES ARE PROTEINS THAT SPEED UP SPECIFIC REACTIONS IN CELLS
Enzyme Review Enzyme Review. 2 What Are Enzymes? Enzymes are Proteins that speed up chemical reactions. They act as Catalysts to break and form bonds.
Enzymes 1. What Are Enzymes? enzymes Many large proteins are enzymes Catalyst Act as Catalyst to accelerates (speed up) a reaction 2.
Enzymes. Pre – Key Point 1: Chemical Reactions Reactants Products REACTANTSPRODUCTS.
Do Now. Do Now Answers N C L L C N C A P P Enzymes Proteins that catalyzes a chemical reaction.
What happens to the food that we eat? Enzymes 1. It breaks down into… Carbohydrates Proteins Lipids.
ACTIVITY #13: ENZYMES. Enzyme Catalyst Substrate Activation energy Active site Denaturation VOCABULARY.
Enzymes The PROTEIN catalyst of life. Enzymes…. are protein substances that are necessary for: 1. The chemical reactions that occur in your body. Ex.
Energy In Reactions Energy is released or absorbed whenever chemical bonds are formed or broken. Because chemical reactions involve breaking and forming.
KEY CONCEPT Enzymes are catalysts for chemical reactions in living things Some chemical reactions that make life possible are too slow or have activation.
Enzymes Objective 2.01 Functions of Enzymes How Enzymes Work.
Chemical Reactions & Enzymes
Enzymes and Chemical Reactions
6.2 Enzymes and Chemical Reactions pages
CHEMICAL REACTIONS!!!! reactant + reactant product reactant product + product reactant + reactant product + product What are some other ways that.
2.5 Enzymes KEY CONCEPT Enzymes are catalysts for chemical reactions in living things. h.com/media/action/yt/watc h?videoId=NdMVRL4oaUo.
Enzymes Catalyst – substance that speeds up the rate of a chemical reaction Enzymes – proteins that act as biological catalysts (speed up chemical reactions.
Explain how enzymes function as catalysts.
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