AP Biologyeasymcq1 pt
Phosphorylation cascades amplify signals by
A.each kinase activating many copies of the next kinase
B.reducing the number of proteins involved
C.removing phosphate from all targets
D.blocking the receptor
Explanation
Core Concept
Signal amplification occurs when one activated component can activate multiple molecules at a downstream step. Repeating this pattern across a signaling cascade can produce a cellular response much larger than the original signal. The amount of amplification depends on the pathway and should not be presented as a fixed number at every step.
Correct Answer
Aeach kinase activating many copies of the next kinase
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