1.

At the end of each phase of cell cycle cyclins activating Cdks in that phase are inactivated irreversibly by _____________(a) Multiple phosphorylations(b) De-phosphorylation(c) Ubiquitinylation(d) Destabilizing by proteolysis in a proteosome

Answer» Right option is (d) Destabilizing by proteolysis in a proteosome

The explanation: At the end of each phase of cell cycle, cyclins are inactivated irreversibly by destabilizing by proteolysis in a proteasome.


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