Summary of Carbohydrates: Monosaccharides‚ Disaccharides‚ Polysaccharides Carbohydrates are molecules that are synthesized from carbon‚ oxygen‚ and hydrogen atoms. Some types of carbohydrates consist of a single unit consisting of a few atoms‚ while other carbohydrates consists of thousands of units linked together through chemical bonds. Glucose‚ maltose‚ and glycogen are three carbohydrates that are similar‚ but structurally different. Carbohydrates have the general molecular formula CH2O. Starch
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each organism within the quadrant has different colors. We streak the S. epidermidis quadrant but it has no color. E. coil on the EMB appears metallic green and P. aeruginosa appears dark purple on the agar. E. coli turns green because of the sugar lactose. EMB is differential media because of the green color of E. coil and it also selects for gram negative and inhibits gram positive. TSA plate is clear and has white color. E. coli grows best on Mannitol plate‚ E. averogenes grows best on the EMB‚ and
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cracker that doesn’t have reducing sugars. Next‚ test the sample for a reducing sugar. The results of the Chemical Aspects lab were that starch‚ potato juice‚ cracker solution‚ and cereal contain starch. In the reducing sugar test glucose‚ fructose‚ lactose‚ and milk contain a reducing sugar. In the grease spot test‚ salad oil‚ milk‚ and chips are lipids. In the dye test‚ salad oil and chips are fats. Egg albumin‚ cereal‚ and cracker mixture show that they are proteins. In the Spit lab the saliva and
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As my memory serves‚ going back several years‚ I slowly realize how many years I spent behind my desk in my room playing games on my computer. I spent day after day playing‚ to get my mind off the harsh reality that I might not be able to go back to a normal life. The life I had before was about to change at the start of my high school career. The pains increased‚ the cramping continued day by day. My stomach had turned into a time bomb waiting to explode. I entered my High School geometry class
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fruits contain much fructose‚ a permanent solution not so is consumption. Milk sugar In stubborn cases swear many congestion ridden on a spoonful of milk sugar in orange juice or water. This home remedy of course does not apply‚ if you suffer from lactose intolerance! Coffee Coffee stimulates the nervous system- and thus the digestion. In addition‚ many more health benefits are attributed to the popular bean beverage. Sauerkraut juice Sauerkraut and the juice from this laxative effect and so
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Oxide causing all sugar solutions to turn red-brown (Hunt‚ n.d.). Solution 1 (1% glucose solution) turned light red-brown‚ solution 3 (1% maltose solution) turned red-brown‚ solution 4 (honey solution) turned brown almost instantly‚ solution 6 (1% lactose solution) turned red‚ and solution 12 (unknown 318) turned red orange. This indicated that
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for gram-negative bacteria. It is made using 6:1 Eosin and Methylene Blue. EMB agar is a differential media and inhibits the growth of gram-positive bacteria while also using a colour indicator to tell the difference between organisms that ferment lactose and those that don’t. E. coli will give off a metallic green sheen when grown in EMB due to metachromatic properties in the dyes used‚ E. coli movement using flagella and the strong acid end products associated with fermentation. Salmonella grown
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Exam 1 (Biol 120‚ Spring 2014) 2/21/14 12:00-12:50 pm 50 questions × 3 points = 150 points 1. Table right compares the shape and size of various prokaryotes. Which one best describes Escherichia coli? A) A B) B C) C D) D E) E 2. Which is the least permeable through the cell membrane? A) Proton B) Water C) Glycerol D) Tryptophan E) Glucose 3. Figure right shows three classes of transport systems. Which one is using energy? A) 1 B) 2 C) 3 D) 1 and 2 E) 1‚ 2 and 3 Use figure right to answer
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the use of hypoglycemic medications. It has only been diagnosed in individuals over the age of 20. Because individuals do not produce any insulin‚ treatment always involves insulin therapy. | 10. (TCO 3) Lactose intolerance is due to a(n): (Points : 1) | deficiency of lactose. deficiency of lactase. deficiency of the GI
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faecal coliforms and Escherichia coli are enumeration methods that are based on lactose fermentation (American Public Health Association‚ 1992). The Most Probable Number (MPN) method is a statistical‚ multi-step assay consisting of presumptive‚ confirmed and completed phases. In the assay‚ serial dilutions of a sample are inoculated into broth media. Analysts score the number of gas positive (fermentation of lactose) tubes‚ from which the other two phases of the assay are performed and then use
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