Question 6
Question 6 of 6

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Investigate and describe the effect of changes in temperature and pH on enzyme activity with reference to optimum temperature and denaturation

Describe the nitrogen cycle with reference to: • decomposition of plant and animal protein to ammonium ions • nitrification • nitrogen fixation by lightning and bacteria • absorption of nitrate ions by plants • production of amino acids and proteins • feeding and digestion of proteins • deamination • denitrification