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4.)What is the enzymatic activity of a kinase and of a phosphatase?5.)What determines where a protein kinase or protein phosphatase will perform its enzymatic activity? 6.)Why would a signaling pathway need to be regulated? 7.)Hypothesize some situations where it would be necessary for signal transduction to happen very rapidly, as happens after the activation of either a kinase cascade or a second-messenger pathway.Part Two: