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BIOLOGY GLOSSARY 4

Biology glossary chapter 4

QuestionAnswer
Activation energy the energy that is required to start biochemical reactions
Active site the specific site of the enzyme that bonds the substrate and where catalysts occur
Allosteric site a site on an enzyme other then the active site to which effector molecules bind
Anabolic reactions biochemical reactions in which larger molecules are made from smaller molecules, requires an input of energy to build new bonds
Catabolic reactions biochemical reaction in which there is a breakdown of macromolecules into smaller molecules, requires an input of energy to build new bonds
Catalytic power the ability of potential of an enzyme to increase the rate of a biochemical reaction compound to the reaction occurring without the enzyme present
Coenzyme a small organic molecule that combines with an enzyme and is necessary for its activity
Competitive inhibition the inhibition of an enzyme due to a molecule that binds to the active site of the enzyme, preventing the substrate from binding
Conformational change a change in the spatial (three-dimensional) arrangement of atoms in a macromolecule such as a protein or nucleic acid
Electrons negatively charged subatomic particles that usually occupy the orbit surrounding the nucleus of an atom
Enzyme-substarate complex the complex that forms when an enzyme binds to a substrate
Feedback inhibition occurs when a product produced late in a biochemical pathway acts as the inhibitor of an enzyme acting earlier in the pathway
Loaded co-enzyme the form of an enzyme that has a proton, electron, or chemical group to donate
Proton a positively charged subatomic particle that forms part of the nucleus of an atom
Non-competitive inhibition the inhibition of an enzyme due to an inhibiting molecule binding to an allosteric site on an enzyme. This causes a conformational change in the active site of the enzyme that prevents substrates from binding, or prevents the catalytic reaction
Substrate molecule that is acted upon by an enzyme
Unloaded coenzyme the form of a coenzyme that is free to accept a proton, electron, or chemical group
Created by: emmawalton05