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Which of the following is true of a CDK molecule if no cyclin is present to bind to it?O CDK is inactive without a cyclin bound to it. O CDK is larger without a cyclin bound to it.
O CDK becomes unstable and disappears with no cyclin present. O none of the choices

Answer :

Answer:

CDK is inactive without a cyclin bound to it.

Explanation:

CDKs are the cyclin-dependent kinases. These protein kinases serve to regulate the various stages of the cell cycle.  Cyclins are the regulatory proteins. The levels of cyclins fluctuate during the cell cycle. Cyclins bind to respective CDKS to activate them. Unless cyclins bind to CDKs, these protein kinases are inactive. Cdk associates with cyclin and forms a cyclin–Cdk complex. For example, mitosis specific Cdk bind to cyclins and activated M-Cdk then activates the proteins that facilitate mitosis and inactivate the one that inhibits mitosis.

luisvaschetto

The statement 'CDK is inactive without a cyclin bound to it' is TRUE of a CDK molecule.

  • Cyclin-dependent kinases (CDKs) are essential protein kinases involved in the regulation of the cell cycle.

  • CDKs are kinase enzymes that act together with cyclins to regulate the progression through the cell cycle.

  • A CDK binds to a specific cyclin in order to activate it, thereby generating a functional enzyme that modifies (phosphorylate) target proteins.

In conclusion, the statement 'CDK is inactive without a cyclin bound to it' is TRUE of a CDK molecule.

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