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Phosphorylation Cascades
Grade Level
AP Biology
APB.212 Phosphorylation Cascades
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A model of a pathway includes calcium ions opening a channel but no protein kinases. Which revision would make it a phosphorylation cascade model?
A
Remove all proteins so only ions carry the signal to the nucleus.
B
Add a kinase that becomes activated and phosphorylates a downstream protein substrate.
C
Show calcium ions phosphorylating DNA directly without enzymes.
D
Make the target protein dephosphorylate the extracellular ligand first.
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