The concentration of actin in cells is 50–100 timesgreater than the critical concentration observed for pureactin in a test tube. How is this possible? What prevents theactin subunits in cells from polymerizing into filaments?Why is it advantageous to the cell to maintain such a largepool of actin subunits?

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Viral Replication

The virus is acellular and considered non-living outside the host cell. The replication of the virus occurs only inside the living cells. Only a few genes are present in the smallest virus, whereas many genes are present in the largest virus. These genes encode specific viral proteins.