Phosphorylation cascades involving a series of protein kinases are useful for cellular signal transduction because

Question

Quizplus · Accepted Answer

Phosphorylation cascades involve a series of protein kinases that activate each other by phosphorylation. This amplifies the original signal manyfold, producing a large cellular response. The other options are not true - phosphorylation cascades are not species-specific, do not always lead to the same response, do not counter the effects of phosphatases, and the number of molecules used is not necessarily small or fixed.

Phosphorylation Cascades Involving a Series of Protein Kinases Are Useful