A signal transduction pathway includes the steps listed below.
1.An inactive signal transduction molecule is activated.
2.A transcription factor enters the nucleus.
3.A gene is expressed.
4.A ligand binds to a protein.
5.A protein undergoes a conformational change.
6.An active signal transduction molecule binds a transcription factor.
Which represents the correct order of these steps?"
A) 5, 4, 3, 1, 6, 2
B) 4, 5, 1, 6, 2, 3
C) 1, 5, 4, 2, 6, 3
D) 5, 4, 1, 6, 3, 2
E) 4, 1, 5, 6, 2, 3

Question

A signal transduction pathway includes the steps listed below. 
1.An inactive signal transduction molecule is activated.
2.A transcription factor enters the nucleus.
3.A gene is expressed.
4.A ligand binds to a protein.
5.A protein undergoes a conformational change.
6.An active signal transduction molecule binds a transcription factor.
Which represents the correct order of these steps?"
A) 5, 4, 3, 1, 6, 2
B) 4, 5, 1, 6, 2, 3
C) 1, 5, 4, 2, 6, 3
D) 5, 4, 1, 6, 3, 2
E) 4, 1, 5, 6, 2, 3

Quizplus · Accepted Answer

The correct order starts with a ligand binding to a protein (4), causing a conformational change in the protein (5). This leads to the activation of a signal transduction molecule (1), which then binds a transcription factor (6). The transcription factor enters the nucleus (2) and initiates gene expression (3).

A Signal Transduction Pathway Includes the Steps Listed Below