There are a variety of mechanisms by which enzyme activity can be controlled. Id
ID: 145526 • Letter: T
Question
There are a variety of mechanisms by which enzyme activity can be controlled. Identify the mechanism associated with each of the following examples of enzyme regulation by sorting each item into the appropriate mechanism bin Note: If you answer this question incorrectly, a single red X will appear indicating that one or more of the phrases are sorted incorrectly. Control by modulators Control by covalent modification Genetic control allosteric regulation of phosphorylation of enzyme induction (synthesis) regulation chymotrypsin glycogen phosphorylase lactose stimulation zymogen feedbaclk of bacterial beta-galactosidase activation inhibitionExplanation / Answer
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Control by modulators: These type of cellular control systems are seen under conditions where a molecule or bio-regulator itself comes into play and thus modulate the rate of reaction of a biological process. Thus, examples include regulation of chymotrypsin, feedback inhibition, zymogen activation.
Control by covalent modifications: These type of cellular control system take place in conditions where interactive forces come into play. These interactions include not only weak Van der Waal's forces, but as strong as covalent linkages. Thus, examples include: Allosteric regulation, phosphorylation of glycogen phosphorylase
Genetic control: These are most specific type of interactions which determine the rate and extent of synthesis of a biomolecule by experession of responsible genes. Thus, examples include enzyme synthesis.
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