I believe this is a trick question but all cells aside from your outer cells, skin hair ect need to be in osmotic equilibrium I believe
The respiratory system always needs iron. The red blood cells are in charge of the transport of O2. They need iron to do this.
Hope this helps! :)
Answer:
Triglycerides, cholesterol and other essential fatty acids.
Explanation:
the scientific term for fats the body can't make on its own—store energy, insulate us and protect our vital organs. They act as messengers, helping proteins do their jobs.
