The nurse should respond to the caregiver that she or he should give a medicine for headache to the child depending on its intensity. If it is aching too much and he or she couldn't bare the pain and that it also has additional symptoms aside it, it is best to accompany the child to a doctor but if it is just light to moderate, it is best to let the child rest and give the child a medicine for headache.
The answer is
Organ level.
This is why
the levels are Cell-Tissue-Organ-Organ system-Organism
Active transport
requires energy. This is because it is going against the natural process of diffusion. Substances diffuse when their net movement is down the concentration gradient (from higher concentration to lower). Active transport is movement from lower concentration to higher. Cytosis (phagocytosis , pinocytosis) also requires energy.
The answer for this one is b) Looping of DNA
