BIOL1002 Lecture Notes - Lecture 2: Boron, Membrane Transport, Phospholipid

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Drought is a key player that is ever-present in the australian environment and mineral nutrients are pivotal in determining plant productivity. An essential nutrient is an element that is required for both normal growth and reproduction and for a specific structure or metabolic function. For most vascular plants, 17 elements are essential. Just three of these carbon, hydrogen, and oxygen. Typically make up about 96 percent of the dry weight of a plant. Essential nutrients can be classified based on whether they are obtained from water or carbon dioxide versus soil. Soil elements can be divided into macronutrients and micronutrients. This is another reason why the root system is so important. Macronutrients are the building blocks of nucleic acids, proteins, carbohydrates, phospholipids, and other key molecules required in relatively large quantities. Rather than acting as components of macromolecules, they usually function as cofactors for specific enzymes. Examples include iron, zin(cid:272), (cid:271)oron, (cid:272)opper, and ni(cid:272)kel.

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