The functions of lipids include storing energy, signaling, and acting as structural components of cell membranes.
The red blood corpuscles have a pigment called hemoglobin that binds to the oxygen and carries it to the whole body in both the conditions, when the body is at rest or when the body is exercising. The oxygenated blood from the heart is carried to the various parts of the body and the de-oxygenated blood from various parts of the body is carried to the lungs where the exchange of gases takes place.
The answer is oxygen end, because the oxygen atoms attract electrons more strong than hydrogen atoms, because of unequal sharing of electrons gives the water molecule a small negative (-) charge close to its oxygen atom