Early work on signal transduction and glycogen metabolism by sutherland indicated that
a. the signal molecule combined directly with a cytosolic enzyme to form an active quaternary structure
b. the signal molecule worked equally well with intact or disrupted cells
c. the signal molecule did not interact directly with the cytosolic enzyme, but required an intact plasma membrane before the enzyme could be activated
d. the cell-signaling pathway involves two separate steps: transduction and response
e. epinephrine is involved in response to stress

The scientific method is a series of steps followed by scientific investigators to answer specific questions about the natural world. it involves making observations, formulating a hypothesis, and conducting scientific experiments.the steps of the scientific method are •observation-the first step of the scientific method involves making an observation about something that interests you•question-once you've made your observation, you must formulate a question about what you have observed. •hypothesis-once you've made your observation, you must formulate a question about what you have observed. •experiment-once you've developed a hypothesis, you must design and conduct an experiment that will test it.•results-the results are where you report what happened in the experiment. •conclusion-the final step of the scientific method is developing a conclusion.i hope that this you : )

Genetic engineering is the answer.

Ithink its c hope it : )

Yes yes yes very good