 The Cf is considered as a  force of reaction, which keeps the physical state of the cell close to the ground state, where all enzymatic acts work perfectly well.
<coherence>  The Cf is considered as a  force of reaction, which keeps the physical state of the cell close to the ground state, where all enzymatic acts work perfectly well.
 Physically, the Cf is considered as a force of reaction, which keeps the physical state of the cell close to the ground state, where all enzymatic acts work perfectly well.