Put the Following Events in the Process of Signal- Transduction

question 3

Multiple Choice

Put the following events in the process of signal- transduction in order:
1) A conformational change in the signal- receptor complex activates an enzyme.
2) Protein kinases are activated.
3) A signal molecule binds to a receptor.
4) Target proteins are phosphorylated.
5) Second messenger molecules are released.

• A) 3, 1, 5, 2, 4
• B) 1, 3, 4, 2, 5
• C) 3, 1, 2, 5, 4
• D) 1, 2, 3, 4, 5

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