Enzymes Proteins Act as catalysts to speed up chemical reactions Are specific – each enzyme can carry out only one type of reaction. Animation of Enzyme.

Slides:

Advertisements

Similar presentations

Advertisements

ENZYMES Enzymes are biological substances (proteins) that occur as catalyst and help complex reactions occur everywhere in life.

{ Enzyme Inhibition Why enzymes don’t work.  An enzyme is just a folded protein Remember!!!

Chapter 5 Enzymes, Coenzyme and Energy Biology 100 Spring 2009.

ENZYME ACTION!!!. What are Enzymes? An enzyme is a biological catalyst. It speeds up a chemical reaction without being used up in the reaction or becoming.

HONORS BIOLOGY.  Pick up worksheets  Pick up notes  Do Section A in the worksheet.

WJEC GCE BIOLOGY Inhibitors and Enzyme Action Graphs to show the effects of Inhibitors on Enzyme Action 3.2.

Created By: Jose Solorzano, Elijah Green, James Lentz.

Enzymes Proteins in Action. Enzymes are Proteins Most enzymes are globular proteins. Like all proteins, enzymes are made up of chains of amino acids.

 Enzymes are made up of proteins.  Enzymes act as a catalyst in living organisms.  A catalyst is a substance that speeds up chemical reactions.  SO,

A Lock-and-Key Enzyme Animation. Enzyme Substrate Active Site.

ENZYMES. Enzymes are Catalysts  Catalytic proteins: change the rate of reactions w/o being consumed  Enzymes speed up reactions by lowering the activation.

Chemical Reaction – process that changes one set of chemicals into another set of chemicals The breaking bonds in reactant and the formation of new bonds.

Aim: What are enzymes? I. Enzymes (Organic Catalysts) – proteins that change the rate of a chemical reaction (usually speeds it up). A. Characteristics.

ENZYME ACTION – MEASURING RATE OF REACTION – SUBSTRATE CONCENTRATION The effects of the following factors on the rate of enzyme controlled reactions –

Energy & Enzymes Miss Napolitano & Mrs. Haas CP Biology.

AIM: What are enzymes and why are they important? DN: What are proteins? What are the building blocks of proteins? Give some examples of proteins.

Competitive, Non- competitive, & End- product inhibition by allosteric sites.

Lock and Key Model Enzymes are specific to their substrates Substrate and active site match each other in two ways: Structurally  substrates that don’t.

Enzyme Activity. ______________________ are broken and made between one or more substances to create new substances. In the process energy is absorbed.

Aim: Why are Enzymes necessary for our survival? A + BC C.

Themes: Structure meets Function

Aim: How do enzymes affect the rate of chemical reactions? DO NOW: 1.Describe the problem in the first picture. 2.Describe the second picture. 3.Define.

Enzymes AP Biology. General Information Globular proteins Unique 3 dimensional shape Active site: pocket or groove where substrate binds.

ENZYMES & ENERGY ACADEMIC BIOLOGY. __________________________________________________________________________________________________________________________________________________.

Enzymes. Enzymes are… Proteins that act as catalysts (accelerate reactions) by creating a new reaction pathway Are specific for what they catalyze and.

Proteins Making Chemical Reactions Possible

1 Chemical reactions of life Processes of life building molecules synthesis breaking down molecules digestion ++

Enzymes. What is an enzyme? Organic catalyst Protein molecule.

Enzymes. Info on Enzymes Enzymes are necessary for all biochemical reactions Enzymes are proteins that speed up a chemical reaction Enzymes break apart.

Enzymes. Science Fact of the Day: The fungus Cordyceps is able to "mind-control" other insects like ants to climb plants and attach there to become its.

Enzymes Chemical Reactions. Chemical reactions are constantly taking place in your cells Reactants  Products Chemical reactions involve making and breaking.

Chapter 8 THE ENERGY OF LIFE.  Energy is neither created nor destroyed  Entropy increases throughout time LAWS OF THERMODYNAMICS.

Lesson 5 Enzymes. Catalyst: something that increases the rate of reactions Enzymes are biological catalysts Often ends with –ase Most enzymes are proteins.

Proteins Making Chemical Reactions Possible. ATB Get a Textbook and turn to page 42.

Enzymes. Introduction Enzymes = organic molecules act as catalysts – Type of protein Catalyst = reduce amount of activation energy needed for reaction.

Eleni Hadjipanteli Substrate Enzyme. What are Enzymes? Organic molecules; Proteins *Globular *suffix –ase Catalysts that help speed up reactions Power.

Enzymes Living organisms are dependent on chemical reactions to survive. These chemical reactions happen TOO SLOWLY or require TOO MUCH ENERGY for us.

Chemical Reactions and Enzymes

A catalyst lowers activation energy.

Enzymes Unit: Ecology.

Ch 6 Section 2 Enzymes.

AP Biology Serrano High School

TSW identify the structure and function of an enzyme

Graphs to show the effects of Inhibitors on Enzyme Action

Proteins that catalyze chemical reactions

Enzymes SPI Describe how enzymes control chemical reaction in the body.

Enzymes Biological catalyst – it speeds up reactions without being permanently changed.

Enzymes & their function

ENZYME Enzyme Reaction Energy of reaction Factors affect rate Other.

Pre – AP Biology Enzymes.

ENZYMES REVIEW PPT.

Action of Enzymes How Enzymes Work

Presentation transcript:

Enzymes Proteins Act as catalysts to speed up chemical reactions Are specific – each enzyme can carry out only one type of reaction. Animation of Enzyme activity – hill.com/sites/ /student_view0/chap ter2/animation__how_enzymes_work.htmlhttp://highered.mcgraw- hill.com/sites/ /student_view0/chap ter2/animation__how_enzymes_work.html

Active Site EnzymeSubstrate + = Enzyme- Substrate Complex ++ Enzyme Products

Inhibitors Slow down chemical reactions. –Competitive inhibitors compete with substrates for the active site –Allosteric inhibitors change the shape of the active site so the substrate can’t attach to the enzyme

Competitive Inhibitor Substrate Enzyme Inhibitor blocks active site stopping enzyme activity.

Enzyme + Allosteric Inhibitor Active Site shape changed No connection