Structure: Enzymes are globular proteins that act as catalysts‚ they have a specific 3D shape that is the result of their amino acid sequence. There is a specific region of the enzyme that is functional‚ this is called the active site. The active site is made up of a small number of amino acids and forms a small depression within the larger enzyme molecule. Moreover‚ the molecule that the enzyme acts upon (substrate) fits precisely into the depression and forms an enzyme-substrate complex. The substrate
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Enzyme as protein Dr.Samina Haq Quantitative and qualitative test for protein and amino acids • 1. 2. 3. 4. 5. 6. Qualitative test Ninhydrin test Biuret test Xanthoproteic test Millons test Hopkins-cole test Nitroprusside test Quantitative test 1. 2. 3. Spectrophotometric assay Protein shows maximum absorbance at 280nm due to presence of tyrosine and tryptophane. Biuret test shows 540nm Lowry test shows 750nm Ninhydrin Test • Amino acid containing a free
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in these reactions‚ resource‚ products and enzyme are three most mainly things. In all chemical reactions‚ there is a activation energy(EA) needed for them. However‚ if the rate of reactions are too low‚ they will not be able to sustain lives. In this case‚ they have enzyme as a protein catalyst. As reaction catalysts‚ enzymes are proteins that adjust the process by initiating the reaction. In this case‚ there are also many elements that influence enzyme working rates. For example‚ most living things
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Chem 11 Study Guide SCH3U Unit 1 Definitions: * SATP: Standard Ambient Temperature and Pressure ( 100kpa and 25 degrees C) * STP: Standard Temperature and Pressure (101.325kp and 0 deg C) * IUPAC: Intn’l Union of Pure and Applied Chem (approves‚ makes chem names symbols‚ etc. * Representative Elements: an element in any of groups 1‚2‚13-18 * Transition Metal: element of groups 3-12 * Energy level: a space with definite and fixed energy in which an electron is allowed to
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structure of the membrane. Phospholipids form a bilayer‚ which is the basic structure of the membrane. Their non-polar tails form a barrier to most water soluble substances. Membrane proteins serves as channels for transport of metabolites‚ some act as enzymes or carriers‚ while some are receptors. Lastly carbohydrate molecules of the membrane are relatively short-chain polysaccharides‚ which has multiple functions‚ for example‚ cell-cell recognition and acting as receptor sites for chemical signals.
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Diagnosis: Physical symptoms of liver trauma include blood loss‚ tenderness of the region‚ peritoneal irritation and its guarding. Haemodynamically stable patients with suspected live injury should be investigated for imaging studies. Focused Assessment with Sonography in Trauma (FAST) is usually useful for both blunt and penetrating trauma. FAST has sensitivity from 75-94 % and specificity from 97-100 % for intra-abdominal fluid in trauma patients. FAST cannot distinguish between laceration and
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AndrewGuerrero BIO 125 Lab Due November 14‚ 2012 Practical Exam 1. a. The symbionts (Paramecium) of the termite belong to the kingdom Protista b. Paramecium living in the intestines of termites breaks down the cellulose walls of wood fibers releasing proteins that are absorbed by the termites’ digestive system. Paramecium benefit by having an environment to thrive and they ingest the wood fibers for their own nutrition as well. 2. c. An important ecological effect
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This essay will describe the structure and function of the heart‚ it will also explain the meaning of Atherosclerosis and how it can lead to myocardial infarctions and angina. It will also discuss and identify the factors that can increase the risk of Coronary Heart Disease and how lifestyle changes can prevent it. The main function of the human heart is to pump blood around the body. It is a muscular cone shaped organ‚ the average size of the human heart is the size of a clenched fist and weights
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the Documentation worksheet‚ and the name the grading scale range Grades. The grading scale is as follows: 95+ | A | 90-94.9 | A- | 87-89.9 | B+ | 83-86.9 | B | 80-82.9 | B- | 77-79.9 | C+ | 73-76.9 | C | 70-72.9 | C- | 67-69.9 | D+ | 63-66.9 | D | 60-62.9 | D- | 0-59.9 | F | B. Calculate the total lab points earned for the first student in cell T8 in the Grades worksheet. The first student earned 93 lab points. C. Calculate the average of the two midterm tests for the
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Elasticities Price elasticity of demand (PED) Law of demand tells us that P goes up Q goes down or P goes down and Q goes up. But it doesn’t give us any information about by how much Q changes compared to P. We want to know‚ using the PED‚ whether Q is changing by a lot compared to P‚ by a little bit compared to P or by the same rate as P. If %∆P<%∆Q‚ this good is called relatively elastic. If %∆P>%∆Q‚ this good is called relatively inelastic. If %∆P=%∆Q‚ this good is called unit elastic.
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