I think the answer is B - a star! Hope this helps!
Answer:
The growth factor receptors have a kinase domain while the Cytokines receptors do not contain a kinase domain as part of their structure.
Explanation:
The two are signaling molecules that control cell activities in some manners, such paracrine, endocrine and autocrine manners.
The receptor kinase domain can be specific for substrate sites in which phosphorylation occurs.
No, Just because it snowed one day in the middle of summer doesn't mean climate is changing, its just an oultier
