PPT-Enzymes

What is it Enzymes are PROTEIN molecules Protein molecules are composed of one or more amino acid chains folded into uniquely shaped globs Enzymes act as CATALYSTS Catalysts are chemicals that regulate the . Definition of an enzyme. Enzyme. is . protein . . catalyst. (i.e. . increase the rate of reactions. ). . NOT. changed during the reaction. Chapter 2: Section 2.5. 1. Objectives. SWBAT explain the effect of a catalyst on activation energy. . SWBAT describe how enzymes regulate chemical reactions. . and maintain homeostasis.. 2. Starter: How can this be possible. Reactions. Most reactions take place in a number of steps which need to be carefully controlled if the cell is to function properly. Enzymes are the most important controllers of cellular reactions. Catalysts. Essential idea: Enzymes control the metabolism of the cell.. Above is just a small part of the IUBMB-. Sigma-Nicholson Metabolic Pathways Chart . aims to show all the metabolic pathways found in eukaryote cells. The chart in it's entirety shows how complex the chemicals reactions needed to support life in a single cell unit. This was mentioned earlier in 2.1, but in addition to the complexity now add to that . Warm up. Grab warm up and complete. We will be putting this into your . journal. When you are done with your warm up look over your Vocab 1-1, you have a . quiz today. Biomolecule review. Cellulose, a structural component of the cell wall of plants and some forms of algae, is mainly used to produce paper and cardboard products. Cellulose would be an example of which type of biomolecule. Presented by Fotios Patsalis . Bio . 446/546 FALL 2016. M/F 13.00-15.50h,. Castetter. . Hall 37. Restriction Enzymes: Molecular Scissors. Restriction enzymes (. endonuleases. ) are specific endonucleases which . Are specific for . what they . catalyze . and do not permanently change during reactions. End in the word -. ase. Function of Enzymes. Enzymes work by lowering the activation energy (the amount of energy needed to start a reaction). . E S <=> ES <=> ES* <=> EP <=> E P. Michaelis-Menten Kinetics. E S <=> ES <=> ES* <=> EP <=> E P. Rate of Formation. Substrate. Product. Enzyme. Enzyme-. 1. What are enzymes?. Each enzyme has only one specific reaction it can perform. . 2. How many different reactions can a single enzyme perform?. Yes, the same enzyme molecule can be used over and over. protein. !. Enzymes are . Biological . catalysts . that . increase. . the rate of metabolic reactions.. Since enzymes speed up chemical reaction rates, what are they called?. Catalyst- . A substance . Restriction enzymes. Polymerase enzyme. Strand-displacing polymerases. Helicase enzymes. Discovery and Obtainability:. Most enzymes are proteins discovered in cells.. But . DNAzymes. were . descovered. Enzymes. Back when we discussed proteins, we learned that one critical function of protein was to speed up chemical reactions.. Enzymes. are the proteins that increase the rate of chemical reactions. Regulation of enzymes Introduction andProperties of Enzymes Enzymes are characteristics to facilitate the Enzyme-catalyzed reactions take place Reactants need to pass over the energy barrier, Catalys that . catalyze. (. i.e.. , . increase or decrease the rates. of) . chemical reactions. .. . In enzymatic reactions, the . molecules. at the beginning of the process are called . substrates. , and they are converted into different molecules, called the .