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Blood vessels allow blood to be circulated around the whole body for delivery of oxygen/nutrients and removal of waste products. The structure of arteries and veins helps...

Key Factors of Photosynthesis:LightWaterC02Therefore, adaptations are to maximise the absorption/use of these substances. Large surface area = maximum light absorptionThin, flattened surface = smaller dif...

DNA, or deoxyribonucleic acid, is a polymer made up of two strands of nucleotides. Each nucleotide is made up of a phosphate group, pentose sugar and nitrogenous base (of which there are 4 types). These n...

Stage 1:Cell growth DNA replicationStage 2:MitosisNucleus dividesChromosomes separateStage 3:CytokinesisCell membrane dividesTwo genetically identical cells form

Enzymes are proteins which increase the rate of reactions by binding to substrates and forming enzyme-substrate (E-S) complexes. The part of the enzyme which binds to the substrate is called the active si...