Enzyme Action Models And Energy Diagram — a labelled NEET Biology diagram with a definitions lexicon.
Enzyme Action Models and Energy Diagram Labelled parts: Lock and Key Model, Induced Fit Model, Active site, Enzyme, Substrate, Enzyme-substrate complex (ES), Reaction Energy Diagram, Free energy, Reactants, Products, Uncatalyzed reaction, Enzyme-catalyzed reaction, Activation energy without enzyme, Activation energy with enzyme, Reaction progress. An early model describing enzyme-substrate interaction, proposing that the active site of an enzyme has a rigid shape perfectly complementary to the substrate. FYI: This model suggests that the binding is highly specific, like a key fitting into a lock. A modern model suggesting that the active site of an enzyme changes its shape upon binding the substrate, optimizing the fit and facilitating catalysis. FYI: This model is considered more accurate, explaining how the enzyme and substrate interact dynamically to form the enzyme-substrate complex. The temporary intermediate formed when an enzyme binds to its specific substrate at the active site, initiating the chemical reaction. FYI: The formation of the ES complex is the first step in enzyme catalysis, leading to the formation of the enzyme-product complex (EP). The minimum amount of energy required to initiate a chemical reaction, representing the energy barrier that must be overcome for reactants to transform into products. FYI: Enzymes function as biological catalysts by lowering the activation energy of a reaction without being consumed themselves. A chemical reaction that proceeds without the assistance of a biological catalyst (enzyme). FYI: The rate of uncatalyzed reactions is typically very slow under physiological conditions. A reaction accelerated by a biological catalyst (enzyme) which lowers the activation energy required for the reaction to proceed. FYI: Enzymes are highly specific, meaning each enzyme typically catalyzes only one specific reaction.