Juan picks up a steel utensil and immediately drops it because it's extremely hot. How does the reflex arc work to protect Juan from a worse burn?

Which is a function performed by stem cells in the skin a. replacing lost skin cells b. making cells for the intestines c. growing new organs d. differentiating into brain cells plz apex

14. which of the following codons code for threonine? a. ucg b. ugu c. cga d. aca

Which of these would most likely be a stimulus that would cause the body to initiate feedback mechanisms a.) normal body temperature in an arctic environment b.) normal boy temperature in a tropical environment c.)light physical activity d.)low blood sugar