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The pupil constricts (becomes smaller) to decrease the light entering the eye. This prevents damage to the eye.

So this part is the last stage of respiration and you will probably ask yourself whats the point of all the NADH and FADH produced during the previous reactions ie Glycolysis producing (per glucose molecu...

A genotype refers to the combination of alleles present that give rise to a certain characteristic.A phenotype refers to the actual physical characteristic as it is seen.An example would be whereby a flow...

Blood will flow between the right and left ventricles. This means that both sides of the heart will contain a mixture of oxygenated and deoxygenated blood. Therefore, the blood sent around the body via th...

Definition of enzymes: Biological catalysts that speed up the rate of reaction by lowering the activation energy , with no effect on equilibrium. They are proteins that have a specific shape . For the enz...