Materials • Samples of different types of milk • Benedict’s Reagent • Biuret Reagent • Sudan III • Water bath • Pipettes/syringes • Test tubes • Microscopic slides and cover slips • Microscope Method (testing for reducing sugars) 1. Add 3cm³ of whole milk‚ by using a pipette or syringe to the test tube. 2. Add 5cm³ of Benedict’s reagent and place it in the boiling water bath for 8 minutes. Do the same for semi-skimmed milk and skimmed milk. 3. Once all 3 of the test tubes are
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Immunity(5 MCQS) Immune system and define its components: - Antigen - Antibody (structure of antibody) - Lymphocytes (B and T cells) What is cell mediated response and humoral immune response? Types of Immunity: - Active immunity - Passive immunity What do you mean by vaccination? 1) The humoral immunity defends mostly against viruses and bacteria throgh a) Skin b) Digestive system c) Body fluids d) Internal organ 2) Which of the following is effective against viral infections
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Mystery bacterium I would not say science is storybook fun‚ but who knew it become a mystery. Trying to find out what was in our number seven vial would become a battle we were willing to take on. As I began the test of deciding if our little bacteria friend was gram positive or negative‚ Jordan my science teammate‚ was putting together a smear plate. In as little as ten minutes we had discovered by the pink oval shapes we were observing‚ our microbe friend was a gram negative rod. We had narrowed
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Biology Form Four Digestion Digestion is the process by which food is broken down from complex insoluble substances into simple soluble substances. There are two types of digestion – chemical digestion and mechanical digestion. Mechanical digestion involves breaking up large pieces of food into smaller pieces. This provides a large surface area for the action of enzymes on food. There is no change to the chemical composition of food during mechanical digestion. Mechanical digestion occurs in
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Carbohydrates Lipases – Lipids Protease – Proteins * Carbohydrates – monosaccharide’s Individual molecule – monomer Repeating molecules – polymer Single monomer – monosaccharide Pair of monomers – disaccharide Large no. of monomers – polysaccharide Monosaccharides – General formula (CH2O)n Best known monosaccharide – C6H12O6 H O H HO OH Test for reducing sugars (Monosaccharide’s and some Disaccharides)
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Pure & Appl. Chern.‚ Vol. 64‚ No. 11‚ pp. 1731-1737‚1992‚ Printed in Great Britain. @ 1992 IUPAC Biosurfactants in industry N. KOSARIC Department of Chemical and Biochemical Engineering University of Western Ontario‚ London‚ Ontario‚ Canada‚ N6A 5B9 ABSTRACT Biosurfactants (Microbial Surface Active Agents) have become recently an important product of biotechnology for industrial and medical applications. Thereason for their popularity‚ as high value microbial products‚ is primarily in
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BACKROUND INFORMATION Organic chemistry is the study of hydrocarbons and their various deviations. (Ex. natural gas‚ paper‚ proteins‚ carbohydrates) Saturated hydrocarbons are hydrocarbons with carbon-carbon single bonds. (Ex. C-C) Unsaturated hydrocarbons are hydrocarbons with one of more multiple carbon-carbon bonds. (Ex. C=C double bond‚ triple bond‚ or both) Stereoisomers have the same molecular and structural formulas but different orientations of atoms in space. Constitutional isomers
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lactose‚ maltose and sucrose. Oligosaccharides - These are complex carbohydrates that consist of three to ten sugars. They are rich in vitamins and minerals; and‚ because they are fiber-rich‚ they are slower to digest than a simple carbohydrate. Polysaccharides - These are also complex carbohydratges and are rich in vitamins‚ minerals and fiber; but‚ they have larger numbers of sugars than an oligosaccharide. Frucose Lactose Lactulose Maltose Maltulose Sucrose Galactose D) Lipids: Structure
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Student Name: Jessica Sousa Student Number: M00455072 Date: 15/11/2014 BMS2113 Molecular and Metabolic Biochemistry Module Leader: BeataBurczynska Practical Tutors: Dirk Wildeboer&BeataBurczynska Formative practical worksheet (three questions) Page limit: Cover sheet + 2 pages maximum By completing the coversheet‚ students acknowledge the following on the originality of their work: I confirm that this work is my own work; where I have rewritten someone else ’s ideas in my own words‚ I have
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storage and transport form of energy in most organisms‚ including plants and animals. Carbohydrates are classified by their number of sugar units: monosaccharides (such as glucose and fructose)‚ disaccharides (such as sucrose and lactose)‚ and polysaccharides (such as starch‚ glycogen‚ and cellulose). B) Lipids Lipids are one class of aliphatic hydrocarbon-containing organic compounds essential for the structure and function of living cells. Lipids are characterized by being water-insoluble but
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