Question

question 6
the primary function of kinases in signal transduction is to ...
○ inactivate relay molecule to turn off signal transduction.
○ regulate gene expression by serving as a transcription factor.
○ inactivate second messengers such as camp.
○ activate protein kinases or other relay molecules in a series.

Explanation:

Kinases are enzymes that add phosphate groups to target proteins. In signal - transduction pathways, their primary role is to activate protein kinases or other relay molecules in a series through phosphorylation, which helps to propagate the signal. They do not primarily inactivate relay molecules to turn off signal transduction, nor are they mainly transcription factors for regulating gene expression, nor do they primarily inactivate second - messengers like cAMP.

Answer:

activate protein kinases or other relay molecules in a series.