A signaling cascade with multiple kinase steps amplifies the signal because
- A
Each kinase irreversibly converts itself into product, ensuring permanent activation of the response
- B
Each kinase activates only one downstream substrate, but the pathway is extremely fast at every stage
- Ccheck_circle
Each kinase phosphorylates many target molecules, multiplying the response at each step
- D
Each kinase moves into the nucleus directly, where it acts as a transcription factor at every step
Explanation
A few activated receptors → many activated kinases → many more phosphorylated targets. Tiny signals can produce massive responses.