The statements are true.
Hemoglobin (Hb), is the oxygen-transport metalloprotein which contains iron in the centre of its structure. This metalloprotein is found in the red blood cells (erythrocytes). The function of hemoglobin is to transport the oxygen through the blood carries from the lungs to the rest of the tissues. Oxygen is necessary for the aerobic respiration in order to provide energy for the functions of the organism (metabolism).
Proteins
Proteins is the most thermogenic of all nutrients and macromolecules we eat. Thermogenesis is the generation of due to digestion and metabolism of food. Studies shows that proteins tend to be more thermogenic that carbohydrates and fats. This means that the calorie given of by proteins is converted and released as heat and less available for storage. This means that the stored energy formed from protein much of it is released as heat and unlike other macromolecules few of it is converted to a energy that can be stored.
One big difference between osmosis and diffusion is that both solvent and solute particles are free to move indiffusion, but when we talk aboutosmosis, only the solvent molecules (water molecules) cross the membrane. ... When people discussosmosis in biology, it always refers to the movement of waters
All elements are made of "atoms", and an atom is made up from 3 basic particles: Electrons are particles with a negative charge :)