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

1.Digestion, Nutrition & Bonds Foodstuffs importantly consist of biopolymers (complex carbohydrates, proteins and lipids); large molecules do of monomers (sugars, amino acids and fatty acids/glycerol) linked 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 post zero - they are exergonic reactions - and constructed in repair and growth - endergonic reactions - where the free energy previously generated is harnessed. Carbohydrates®Monosaccharides ®4 kcals g-1 Proteins®Amino Acids (AAs)®4 kcals g-1 Lipids® Fatty Acids (FAs) and glycerine®9 kcals g-1 Whilst some(prenominal) bond classification systems exist the most grievous in physiology is the covalent bond; where two atoms share outer bawl out electrons, devising both more stable. This forms the basis of peptide; proteins, ester; fats and saccharide: carbohydrate, biopolymer backbones. The noggin bond; ele ctrons are transferred between atoms comes a close second, they are differentiate to the oxidation/reduction (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 formation of ions within body fluids, e.g. Na+, Ca2+, Mg2+, Cl-, H+; every last(predicate) play a direct or indirect fictional character in the energy generating pathways and in other vital areas, e.g. typeface conduction. Table 1: The main Nutrients NutrientNotes Carbohydrates -Mostly in the form of complex carbohydrates (polysaccharides) Proteins -Twenty amino acids are base in human proteins, only 12 of which can be produced in the body.

The remaining eight are the essential amino acids and must be dietary supplied. Lipids -Usually in the form of triglycerides, which rifle fatty acids (FAs) and glycerol Minerals -There are twelve severalise minerals, which must by dietary supplied; Calcium, Magnesium, Phosphorous, Iron, Potassium, Zinc, Iodine, Copper, Molybdenum, Manganese, Chromium and Selenium. Vitamins -Small organic molecules that expedite metamorphosis by serving as... The shew was well explained. I subscribe always had difficulty reading and understanding science. This essay was gain ground and conscise for an amateur reader. Good source of information. If you want to get a full essay, order it on our website: OrderCustomPaper.com

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