Failing Power Steering Pump: If the power steering pump begins to fail you may notice some squealing when turning the wheel. When seals and other parts of the power steering pump begin to wear down, the pump cannot maintain a consistent level of fluid pressure.
Return to CHAPTER 20. Control activities are the policies, procedures, techniques, and mechanisms that help ensure that management's response to reduce risks identified during the risk assessment process is carried out. In other words, control activities are actions taken to minimize risk.
There are five main ways that enzyme activity is controlled in the cell. 1  Enzyme production (transcription and translation of enzyme genes) can be increased or reduced in response to changes in the cell's environment. 2  Enzymes can occur in different cellular compartments. 3  Enzymes can be regulated by their own products.