fertility‚ cause cancer‚ and damage vital human organs like liver‚ kidney‚ and heart‚ the discussants said. Roy in his presentation said formalin is applied on fish for preservation; calcium carbide on fruits to ripen; brick dust in chilli powder; urea to whiten rice and puffed rice; sawdust in loose tea; soap in Ghee; and artificial sweetener‚ coal tar‚ and textile dyes in sweetmeats. Formalin applied on fish‚ fruit‚ meat‚ and milk causes throat cancer‚ blood cancer‚ childhood asthma‚ and skin
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|Value | |1 |Glucose |3.61- 4.07 | | |(mmol/L) | | |2 |Urea |14.85- 21.49 | | |(mmol/L) | | |3 |Cholesterol |4.71-6.13
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Physical Properties of Organic Molecules Abstract Identifying the physical properties of compounds can be useful in several ways. It helps us to determine the structure of certain compounds‚ the purity of substances and if a substance is not pure we can figure out how to separate contaminating substances from a compound. In this experiment‚ I learned how to determine a solid’s melting point and why some melting point ranges may be broader than others.
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Isolation and identification of an unknown bacterium Pillay‚ Esmerelda (209504371) School of Biochemistry‚ Genetics and Microbiology Department of Microbiology University of Kwa-zulu Natal 25 October 2010 ABSTRACT Different types of bacteria in various forms are found all around us‚ and it is a microbiologist’s job to be able to identify these bacteria. Using various staining techniques and physiological tests‚ an isolated bacterium can be identified. In this experiment‚ a single bacterial
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ACTIVITY 1: Simulating Dialysis (Simple Diffusion) Answers 1. The molecular weight of urea is approximately 60. Which of the membranes can it pass through? a. 50 MWCO membrane b. 100 MWCO membrane c. 200 MWCO membrane d. Both the 100 and 200 MWCO membranes D. Both the 100 and 200 MWCO membranes 2. True or False: A solution containing glucose will diffuse faster through a 200 MWCO membrane if it is heated. True 3. The molecular weight of carbon C is 12; the molecular weight of hydrogen
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Our indole test came back negative‚ meaning K. pneumoniae does not produce tryptophanase and does not break down tryptophan into indole‚ ammonia‚ and pyruvic acid. The urea test was performed to determine if urea is hydrolyzed via the enzyme urease. The urea test was positive‚ meaning K. pneumoniae produces urease to break down urea. An inoculation onto Kligler’s iron agar determines if an organism can ferment glucose and lactose‚ it also detects the production of hydrogen sulfide from the breakdown
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Experiment 1: Isolation of Casein from Milk * pH of milk – 6.6 * milk = 87.1% water‚ 4.9 % CHO 3.9 %‚ fats‚ 0.7% minerals Experiment 2: Protein Hydrolysis and Characterization | Reagents | Principle | Test for | Positive Result | Negative Result | Biuret | CuSO4‚ NaOH | Complexation of Cu+2 with amide N atoms | Polypeptide bonds | Violet/purple solution | Blue color solution | Sakaguchi | 10% NaOH‚ 0.02% α-naphtol solution‚ 2% NaOBr | arginine condenses with α-naphtol and NaOH
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or an action potential thus sending a message down the neurone. Another adaption to the membrane occurs in the nephron. The loop of henle has proteins in the membrane which pump out‚ by means of active transport‚ ions to suck out the water from the urea to retain it. This countercurrent
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oriented international joint venture company. KAFCO is now one of Bangladesh’s most successful companies. KAFCO supplies one-sixth of the crucial Urea fertilizer needs for the whole of Bangladesh‚ and brings in tens of millions of dollars of export earnings each year to the country. i. Its business ; KAFCO produced very high quality Urea fertilizer and Ammonia‚ organic all for the global market‚ now helping also to support Bangladesh. KAFCO is one of the largest industrial joint
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20 – 03 – 13 EXPERIMENT: - PREPARATION OF POLYURETHANES AIM Synthesis of polyurethanes OBJECTIVES - Mixing a diisocyanate and a diol in polyurethane synthesis of two distinct products. - Comparing polyurethane from castor oil to that made from polyethylene glycol. - To establish the type of foams in terms rigidity or flexibility. THEORY Polyurethanes‚ also known as polycarbamates‚ belong to a larger class of compounds called polymers. Polymers are macromolecules made up
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