NATS 1560 (test 1) 2023 with complete solution

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NATS 1560 (test 1) 2023 with complete solution Food science ✔Ans✔ •scientific and technological research on the properties of food substances, aimed at inventing new food products and new methods of preservation and processing Nutrition science ✔Ans✔ the scientific study of the processes through which food provides nourishment to the body what are the general characteristics of the modern sciences? ✔Ans✔ materialism, reductionism & experimentalism What are macronutrients? ✔Ans✔ carbohydrates, lipids, proteins what are micronutrients? ✔Ans✔ vitamins and minerals Atomic theory ✔Ans✔ •all material substances are constituted of atoms Element ✔Ans✔ •substance composed only of atoms of the same species Compound ✔Ans✔ A substance made up of atoms of two or more different elements joined by chemical bonds Mixture ✔Ans✔ •can be separated and purified into simpler substances by physical means Chemical formula ✔Ans✔ •symbolic expression representing the chemical composition of a molecule, (i.e. the species and numbers of atoms composing it) Chemical reaction ✔Ans✔ re-arrangement of the atoms of the reactants into new molecules (products) catalyst ✔Ans✔ is a substance that facilitates the reaction but is not changed by the reaction Molecular structure ✔Ans✔ arrangement of atoms in a molecule in 3d space Structural formulas ✔Ans✔ 2d representations of molecular structure Isomers ✔Ans✔ molecules having the same chemical composition but different structures Functional groups ✔Ans✔ recurring groups of atoms that determine the reactivity of organic molecules What are the "macromolecules of life"? ✔Ans✔ •Carbohydrates •Lipids •Proteins •DNA Macronutrient distribution (for adults 19 & over) ✔Ans✔ -carbohydrates 45-65% -proteins 10-35% -fat 20-35% ADMR (Acceptable Macronutrient Distribution Ranges) ✔Ans✔ -the percentage range for macronutrients intakes that is associated with reduced risk of chronic disease while providing adequate intakes of essential nutrients our body needs food for? ✔Ans✔ −molecules, needed for the growth and repair of organs and tissues −energy, needed for all physiological processes kilocalorie ✔Ans✔ •amount of energy required to raise the temperature of 1 kg of water 1°C at standard atmospheric pressure

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