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Blood is carried from the body to the heart via the Super Vena cavaIt enters the heart first into the right atrium before going through the right atrioventricular (tricuspid) valve into the right ventricl...
The movement of water molecules from an area of high water concentration to an area of low water concentration.
It has a bi-concave shape which means that it has a larger surface area, so that more Oxygen and Carbon Dioxide can move in and out.It has no nucleus to allow maximum amounts of haemoglobin (a protein tha...
B. Nucleus
A substance which increases the rate of a reaction without being consumed
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