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There are 4 main structural levels of proteins which allow them to be the most diverse molecules in the cell. First is the primary structure which is the sequence of amino acids found in the protein. Amin...

I have always had an interest for the subject and find it very interesting. I have achieved both GCSE and A-Level biology and am currently studying Biochemistry with Genetics at university. I understand t...

Abiotic: temperature, rainfall, oxygen, nutrient availability Biotic: competition and predation between species, migration

Biofuels are fuels made from organic biomass, i.e., plant material. Sugarcane and sugar beet are sources of biofuels.

Enzymes are involved in chemical digestion. When nutrients are ingested there are many different sized molecules across the various food groups. Some of these molecules are already small enough to be abso...