Refer to the Figure Below

question 4

Multiple Choice

Refer to the figure below. The figure shows a signal transduction pathway involving two proteins found in the cytoplasm-JAK and STAT.Based on this figure, what are the roles of JAK and STAT in this pathway?

• A) JAK is a G protein and STAT is a transcription factor.
• B) JAK is a transcription factor and STAT is a GTPase.
• C) JAK is a protein kinase and STAT is a G protein.
• D) JAK is a G protein and STAT is adenylyl cyclase.
• E) JAK is a protein kinase and STAT is a transcription factor.