APPROVED ACADEMIC SESSION: 2011/2012 Campus MEDWAY School School of Science Level Four Date May 2012 COURSE CODE BIOC1011 COURSE TITLE FUNDAMENTALS OF BIOCHEMISTRY Duration 2 Hours ___________________________________________________________________________ INSTRUCTIONS TO CANDIDATES SECTION A Answer all the multiple choice questions on the answer sheet provided. Each question has ONE correct answer only. Each question is worth one mark
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the presence of a acid catalyst in order to form Esters by Fischer Esterification. These Esters had different pleasant smells that we then evaluated. In the second part of the experiment‚ we broke the ester bonds of a triglyceride in order to form glycerol and carboxylate salts. This process is known as Saponification because it produces amphiphilic molecules that allow soap to remove dirt from the surface of things and dissolve it in water. We used Crisco as our triglyceride and were able to produce
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BIOLOGY 114 MOLECULAR AND CELL BIOLOGY PRACTICAL MANUAL DEPARTMENT OF MICROBIAL‚ BIOCHEMICAL AND FOOD BIOTECHNOLOGY FACULTY OF NATURAL AND AGRICULTURAL SCIENCES UNIVERSITY OF THE FREE STATE 2012 Lecturers Prof. E. van Heerden Room 8 Department of Microbial‚ Biochemical and Food Biotechnology Prof. J. Albertyn Room 51 Department of Microbial‚ Biochemical and Food Biotechnology Practical time table Week Week begin Tutorial Tutoriaal Prac. and lecturer Prak
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Emulsifiers What does an emulsifier do? Emulsions in food are mixtures of oil and water. These normally do not mix and will separate if left without an emulsifier. Emulsifiers are among the most frequently used types of food additives. They are used for many reasons. Emulsifiers can help to make a food appealing. The example of the mayonnaise without the emulsifier shows how unappealing it would be if the oil and water separated before it was used. Emulsifiers have a big effect on the structure
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ω-hydroxyacid/fatty alcohol hydroxycinnamoyl transferase; GPAT5‚ glycerol phosphate acyltransferase 5 and to restrict infection. Suberization takes place on the periderm of stems‚ roots and tubers and in a variety of other barrier layers‚ such as the root endodermis or the seed coat. Suberin is a complex biopolymer made of cross-linked poly(aliphatic) and poly(aromatic) domains (reviewed in refs. 1–5). The aliphatic domain (aliphatic suberin) consists of a glycerol-based fatty acid derived polyester that‚ on trans-esterification
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BSC 2086C: Anatomy and Physiology I Lab 2: The Chemistry of Life Name ____ Directions: There are eight (8) activities in this lab. Please be sure to complete them all. For all questions‚ type your answers into the yellow box ____ (including your name above) it will expand as you write. Activity 1 1-1: Insert the chemical symbol in the answer blank for each of the following elements. ____ 1. oxygen ____ 2. carbon ____ 3. potassium ____ 4. iodine ____ 5. hydrogen ____
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They are commonly found as triglycerides (three unsaturated fats appended to one glycerol spine). Fats may be delegated immersed or unsaturated relying upon the point by point structure of the unsaturated fats included. Immersed fats have the majority of the carbon iotas in their unsaturated fat chains clung to hydrogen particles‚ while
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SBI4U – CHAPTER ONE TEST – PART A – Multiple Choice 1. Which of the following is the essential characteristic of a polar molecule? a) contains double or triple bonds b) is formed at extremely low temperatures c) contains ions as part of the structure d) has an asymmetrical distribution of electrical charge e) contains the element oxygen 2. Isomers are molecules that a) react readily with one another b) have the same molecular formula c) have different molecular masses d) differ
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aimed cells. Majority of the body’s lipids(phospholipids‚ triacylglycerols and cholesterol)‚ are moved in the plasma by big complexes called lipoproteins. Lipoproteins makeup a center part of hydrophobic lipids encompassed by a shell of phosphotidyl glycerols and proteins. Protein parts of lipoproteins solubilize the hydrophobic lipids and include the cell targeting signals. Assorted according to their density are lipoproteins . The smallest density lipoprotein are the chylomicrons proceeded by the chylomicron
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Determination of the heat of Combustion of Biodiesel Using Bomb Calorimetry Abstract: In this experiment‚ biodiesel fuel was synthesized from vegetable oil. Biodiesel is considered “green” and better for the environment because it is biodegradable. The heat of combustion was then determined using a bomb calorimeter. Introduction: Petroleum is the largest single source of energy consumed by the world’s population‚ exceeding coal‚ natural gas‚ nuclear‚ hydro‚ and renewables (3). It is predicted that
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