Enzymes are biological catalysts that speed up chemical reactions.Enzymes are required in small amountsThey remai n chemically unchanged at the end of a reaction.Enzymes are protein in nature.Enzyme activity is affected by temperature and pH.Enzymes speed up chemical reactions by lowering the activat...
Singapore)Pte.Ltd.21April2010 9 ActivationEnergy Imagineachemical1reactionastheprocessofrollingahugestone(reactant)upahillsothatitrollsdownandbreaksintotinypieces(products).3 Onceoverthehill,therestofthereactionoccurs.2 Activationenergyistheenergyneededtorollthestoneupthehill.
Enzymes are special proteins which act to speed up chemical reactions because many chemical reactions required for cells to function normally would not take place at the temperature and pH found in the body (Devlin 128). The protein part of the enzyme without any cofactors or prosthetic groups ...
Enzymes are proteins, which catalyze chemical reactions within the body. These reactions occur as enzymes speed up certain chemical processes by acting on specific substrates. An example of an overall physiological process that requires enzymes is metabolism. ...
For example, metabolic pathways are comprised of a series of enzymes that speed up chemical reactions by several orders of magnitude. These enzyme pathways continually accomplish very complex chemical reactions inside every living cell. The history of enzymes dates to the 18th and early 19th ...
Explain how enzymes speed up chemical reactions. What is a factor that could speed up or slow down enzyme speed? a) How does substrate concentration affect enzyme activity? b) How does pH affect enzyme activity? Why do some enzymes, like pepsin, not denature at a...
A protein that acts as a catalyst, a material that speeds up chemical reactions in the bodies of plants and animals without itself taking part in, or being consumed by, these reactions. FERMENTATION: A process involving enzymes in which a compound rich in energy is broken down into simpler ...
•Enzymes catalyze (speed up) reactions by lowering the activation energy (EA) barrier. Chemical reactions between molecules involve breaking and forming bonds. Activation Energy (EA) . The energy needed to start a chemical reactionA bump that needs to be overcome before those reactants can be...
•Enzymes are catalytic proteins that accelerate the rate of chemical reactions by lowering the amount of energy needed to start the reaction. -when remove activation energy the reaction goes faster What do enzymes do? speed up chemical reactions by lowering the activation energy...
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, CELL METABOLISM Enzymes Definition Catalysts Proteins that speed up chemical reactions by lowering the energy of activation. ...