Behaviour / properties of gases & aqueous solutions; Colloids & emulsions; Concept equilibra and law of mass action; Acids, bases, buffers, Indicators; Proteins (amino acids; nucleotides, nucleic acids & co-enzymes; an overview of amino acid protein synthesis)Chemistry & function of carbohydrates, lipids, vitamins; Plant Biochemistry - light and dark reactions of photosynthesis; Nitrogen metabolism - nitrogen fixation, nitrate reduction & assimilation; Respiration. objectives: