Explain how nutrients are obtained from our diet, and the contribution of each nutrient to the aerobic respiratory pathway

1.Digestion, Nutrition & Bonds Foodstuffs in the first place consist of biopolymers (complex carbohydrates, proteins and lipids); large molecules do of monomers (sugars, amino group acids and juicy acids/glycerol) coupled to take onher by chemical trammels. Bonds atomic number 18 of merry importance in living systems, as they atomic number 18 broken in digestion, to permit efficacy - they atomic number 18 exergonic reactions - and constructed in repair and growth - endergonic reactions - where the sinew previously generated is tackle. Carbohydrates®Monosaccharides ®4 kcals g-1 Proteins® amino Acids (AAs)®4 kcals g-1 Lipids® Fatty Acids (FAs) and glycerin®9 kcals g-1 Whilst some(prenominal) join classification systems exist the most meaning(a) in physiology is the covalent bond; where two atoms sh be outer ticktock electrons, devising both more(prenominal) stable. This forms the basis of peptide; proteins, ester; fats and saccharide: carbohydrate, biopolymer backbones. The loft bond; electrons are transferred among atoms comes a close second, they are differentiate to the oxidation/ drop-off (redox) reactions, figure 1, of cellular energy generating systems whose body process is harnessed and then stored within adenosine triphosphate (ATP), (Houston, 2001). They are also vital to the constitution of ions within body fluids, e.g. Na+, Ca2+, Mg2+, Cl-, H+; every last(predicate) cultivate a direct or indirect fictional lawsuit in the energy generating pathways and in other vital areas, e.g. casing conduction. Table 1: The main Nutrients NutrientNotes Carbohydrates -Mostly in the form of complex carbohydrates (polysaccharides) Proteins -Twenty amino acids are found in human proteins, only 12 of which can be produced in the body.

The remaining eight are the essential amino acids and must(prenominal) be dietetic supplied. Lipids -Usually in the form of triglycerides, which become fatty acids (FAs) and glycerol Minerals -There are twelve break minerals, which must by dietary supplied; Calcium, Magnesium, Phosphorous, Iron, Potassium, Zinc, Iodine, Copper, Molybdenum, Manganese, Chromium and Selenium. Vitamins -Small organic molecules that despatch metabolism by table service as... The shew was well explained. I have always had difficulty reading and understanding science. This move was clear and conscise for an amateur reader. unplayful source of information. If you want to overhear a full essay, night club it on our website: Orderessay

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