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Investigation to find out if there is a relationship between the concentration of phosphate ions in nutrient solutions and the number of cells dividing by mitosis in root tips. Mitosis is the nuclear division of a cell producing two genetically identical daughter nuclei, each containing the same number of chromosomes as the parent nucleus. Mitosis is a continuous cycle but has been divided into four stages; prophase, metaphase, anaphase, telophase. Phosphate is important for all organisms; it is essential for growth and development and has several roles; * Nucleotides - DNA, RNA & ATP are nucleic acids; phosphate groups are vital to their structure. It combines with the sugar forming a sugar-phosphate backbone, which holds the molecule and covalently bonds different nucleotides to one another. DNA & RNA have one phosphate group and ATP has three. ATP is used by cells to carry out 'work, therefore is considered as 'energy currency' and is needed...

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