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

Question

Quizplus · Accepted Answer

The sequence of events in signal-transduction is as follows:
1. A signal molecule binds to a receptor (3).
2. A conformational change in the signal-receptor complex activates an enzyme (1).
3. Second messenger molecules are released (5).
4. Protein kinases are activated (2).
5. Target proteins are phosphorylated (4). 
Therefore, option C is the correct sequence.

Put the Following Events in the Process of Signal-Transduction in Order