1 pound = 0.45 kg Therefore 18 pounds = 18 x 0.45 = 8.1 Kg But, the dosage is 5 mg per kilogram of the body. Thus, 5 mg for each of the kg will be 5 x 8.1 = 40.5 mg Therefore, 40.5 mg Ibuprofen for 18 pounds body weight
In exothermic reactions, the products have higher energy than the reactants, and in endothermic reactions, the reactants have higher energy than the products.
The correct answer is D. Cell Membrane because the cell membrane contains two phospholipid layers with the protein molecules attached to them throughout.