Molecular Biology UPDATED Exam Questions and CORRECT Answers
Most common elements found in living organisms - CHON Carbon, Hydrogen and Oxygen are found in most organic molecule such as carbohydrates, proteins nucleic acid and lipids. Nitrogen is also found nucleic acid and proteins. Important inorganic elements - Sulphur - present in some amino acids (Methionine and Cysteine) Calcium - A crucial component of our bones and needed for muscle contraction (co-factor in some enzyme reactions for plants) Phosphorus - A component of ATP and DNA, as well as phospholipid bilayer Iron - Haem group in a Haemoglobin and cytochrome pigments. Sodium - Important in membrane, changes solute concentration and affects osmosis, also important in transmission of nerve impulses
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