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Dissociation denotes reversible separation. Enzyme cleavage of lactose is irreversible. The earlier term 'cleaves' is correct, not 'dissociates'. Many good texts are available. Please study them.

PhET Gene-Machine-The-Lac-Operon 07-08 min 0-10 sec 23-07-18, 7:14 p.m. Phil


Here dissociation was used as general term to indicate the molecule breaks into 2 or more fragments.

Bond cleavage, or scission, is the splitting of chemical bonds. This can be generally referred to as dissociation when a molecule is cleaved into two or more fragments.
26-07-18, 3:30 p.m. snehalathak

Molecule being cleaved into fragments...yes, when held by electrostatic forces, dissociation is an appropriate word. But covalent bond cleavage is not described correctly by dissociation.
06-08-18, 11:29 p.m. Phil

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