Put the steps of the process of signal transduction in the order they occur.
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, 4, 5
C) 3, 1, 5, 2, 4
D) 1, 2, 5, 3, 4

Question

Quizplus · Accepted Answer

The correct order is: A signal molecule binds to a receptor (3), causing a conformational change in the signal-receptor complex that activates an enzyme (1). This leads to the release of second messenger molecules (5), which activate protein kinases (2), and finally, target proteins are phosphorylated (4).

Put the Steps of the Process of Signal Transduction in the Order