Biology Laboratory Report Practical 4 Food tests Introduction The main components of food are proteins‚ fats‚ carbohydrates‚ and‚ of course‚ water. Proteins‚ lipids and carbohydrates are carriers about energy necessary for vital activity. They are a plastic material for the formation of structures of the body‚ as well as used for the synthesis of hormones and substances that transmit signals in the nervous system. Our food also includes food (plant) fibers‚ has recently seemed unnecessary ballast
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Monosaccharide also called SIMPLE SUGAR‚ any of the basic compounds that serve as the building blocks of carbohydrates. Monosaccharides are polyhydroxy aldehydes or ketones; that is‚ they are molecules with more than one hydroxyl group (-OH)‚ and a carbonyl group (C=O) either at the terminal carbon atom (aldose) or at the second carbon atom (ketose). The carbonyl group combines in aqueous solution with one hydroxyl group to form a cyclic compound (hemi-acetal or hemi-ketal). Monosaccharides are
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1. Foster-Powell‚ Holt SHA‚ Brand-Miller JC. International table of glycemic index and glycemic load values: 2002. Am J Clin Nutr. 2002;76(1):5–56. 2. Jenkins DJH‚ Wolever TM‚ Taylor RH‚ et al. Glycemic index of foods: a physiological basis for carbohydrate exchange. Am J Clin Nutr. 1981 Mar;34(3):362–6. 3. Klöting N‚ Fasshauer M‚ Dietrich A‚ et al. Insulin sensitive obesity. Am J Physiol Endocrinol Metab. 2010 Jun 22. 4. DeMarco VG‚ Johnson MS‚ Whaley-Connell AT‚ Sowers JR. Cytokine abnormalities
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Date Submitted: May 11‚ 2015 Lab Schedule: M-F 7:00-10:00 Score: Group No. 4 Experiment No. 3 Carbohydrates Objectives Use of chemical tests to identify some physical and chemical characteristics of typical carbohydrates. Differentiate between monosaccharides‚ disaccharides‚ and polysaccharides using above tests Identify an unknown carbohydrate Results A. STRUCTURAL FORMULAS FOR CARBOHYDRATES MONOSACCHARIDES STRUCTURES FISCHER HAWORTH CHAIR Glucose Fructose DISACCHARIDES (Haworth and
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4. It aids in losing weight It is rich in fibre which is good for your bowel movements. It keeps the bowel function going in such a way that leads to weight loss and good metabolism. It also has the ability to make you feel full when you take small portions of it. 5. It is enriched with antioxidants When people think of antioxidants‚ they immediately think of green tea‚ berries‚ fruits‚ and vegetables. Little do they know
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Aldehyde and Ketone 1. ALDEHYDE Definition: An aldehyde is an organic compound containing a formyl group. This functional group‚ with the structure R-CHO‚ consists of a carbonyl center (a carbon double bonded to oxygen) bonded to hydrogen and an R group‚ which is any generic alkyl or side chain. The group without R is called the aldehyde group or formyl group. Aldehydes differ from ketones in that the carbonyl is placed at the end of a carbon skeleton rather than between two carbon atoms
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References: Basciano‚ H.‚ Federico‚ L.‚ & Adeli‚ K. (2005‚ February 21). Fructose‚iInsulin resistance‚ and metabolic dyslipidemia. Nutrition & Metabolism ‚ 43-75. Beyer‚ P.‚ Cavier‚ E.‚ & McCallum‚ R. (2005). Fructose intake at current levels in the US may cause gastrointestinal distree in normal adults. Journal of the American Diet Association ‚ 1559-1566. Carey. (2006). Furanoses and Pyranoses
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life forces‚ vitamins and minerals. "What is left consists of pure‚ refined carbohydrates. The body cannot utilize this refined starch and carbohydrate unless the depleted proteins‚ vitamins and minerals are present. Nature supplies these elements in each plant in quantities sufficient to metabolize the carbohydrate in that particular plant. There is no excess for other added carbohydrates. Incomplete carbohydrate metabolism results in the formation of ’toxic metabolite’ such as pyruvic acid and abnormal
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Exam 3 Study Guide Digestive System Differentiate digestion from metabolism Identify the organs of the alimentary canal in order from the mouth to the anus Mouth Know the 8 anatomical parts Processes – mastication‚ swallowing ‚ taste Pharynx Identify the naso-‚ oro- and laryngopharynx and classify these regions with respect to passage of food and/or air through them Longitudinal & circular muscle layer - peristalsis For the alimentary canal from esophagus to large intestine:
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leaving your body weak with the lack energy you need to complete daily tasks. The high levels of sugar in junk food puts your metabolism under stress; when you eat refined sugar‚ your pancreas secretes high amounts of insulin to prevent a dangerous spike in blood sugar levels. Because fast food and junk food don’t contain adequate amounts of protein and good carbohydrates‚...
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