Phosphorylation cascades involving a series of protein kinases are useful for cellular signal transduction because they phosphorylation cascades involving a series of protein kinases are useful for cellular signal transduction because they amplify the original signal many times are species specific counter the harmful effects of phosphatases always lead to the same cellular response use a small and fixed number of molecules

Ans. They amplify the original signal manyfold.

 Phosphorylation cascade is a series of event in which one enzyme phosphorylate another thereby causing a chain reaction that result into the phosphorylation of thousand proteins. Thus, the enzymes responsible for phosphorylation are known as kinase. Hence, these cascades serve to amplify the original signal and also improving the signal.

it's not c. i took the quiz and got it wrong. so my best guess is b.

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