Noun. 1. agoraphobia-a morbid fear of open spaces (as fear of being caught alone in some public place). phobia, phobic disorder, phobic neurosis-an anxiety disorder characterized by extreme and irrational fear of simple things or social situations; phobic disorder is a general term for all phobias. Translations.
Coenzyme [edit]. A coenzyme is a small, organic, non-protein molecules that carries chemical groups between enzymes. It is the cofactor for the enzyme and does not form a permanent part in the enzyme's structure. Sometimes, they are called cosubstrates and are considered substrates that are loosely bound to the enzyme. In metabolism, coenzymes play a role in group-transfer reactions, such as ATP and coenzyme A, and oxidation-reduction reactions, such as NAD+ and coenzyme Q10. Coenzymes are frequently consumed and recycled.
Cells regulate enzyme activity through 2 methods; allosteric inhibition and competitive inhibition. Allosteric inhibition is when something (Ion, organic chemical, etc) bo â¦ nds to a site on the enzyme ( not on the active site) and that changes the shape of an enzyme. Competitive inhibition is when something (ion, organic chemical, etc) enters the active site so that the true substrate cannot enter into the enzyme to have a reaction.