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The binding curve of haemoglobin to its substrate is sigmoidal ('s' -shaped). Haemoglobin has four subunits, each of which will bind one molecule of oxygen. The reason for the sigmoidal shape is the proce...

Firstly, red blood cells contain the globular protein haemoglobin which is able to bind reversibly with oxygen. This means red blood cells can take up and then release oxygen as they transport it around t...

Nucleusoften referred to as 'brain' of the cellStores the DNA/genetic materialControls cellular processes within the cellMitochondriaOften referred to as the 'powerhouse' of the cellGenerates energy for t...

Bile basically has the same function as washing up liquid, it makes it easier to break down fatty material. It is released by the liver, and stored in the gall bladder, before being released into the smal...

-DNA and RNA are very similar in their molecular structure. Both of them are formed by smaller units called nucleotides. A nucleotide is composed by 3 parts: a sugar group, a phosphate group and a nitroge...