Question 28 ( 6 points) Put the following steps in the correct order to describe the process of slgnal transduction. receptor protein activation second messenger synthesis target protein response downstream signaling activation upstream signaling activation first messenger binding Question 29 ( 6 points) In what way are receptor tyrosine kinases and G-protein coupled receptors most similar? When activated, the receptor has enzymatic activity. Question 29 ( 6 points) In what way are receptor tyrosine kinases and G-protein coupled receptors most similar? When activated, the receptor has enzymatic activity. The receptor undergoes a conformational change on activation. The receptor binds to intracellular proteins only when activated