Lab Report 8 April 15th Exercise 8: Chemical and Physical Processes of Digestion Lab Report Questions Activity 1 What is the difference between the IKI assay and Benedict’s assay? IKI assay detects the presence of starch‚ and the Benedict assay tests for the presence of reducing sugars as well as IKI turns blue black whereas Benedict is a bright blue that changes to green to orange to reddish brown with increasing levels of maltose What was the purpose of tubes #1 and #2? Why are they
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BH4- + 8 [Fe (CN)6]3- + 3H2O 8 [Fe(CN)6]4- + H2 BO3- + 8H+ The advantage of hexacyanoferrate ion for this redox study is that both oxidation states of iron (+2 and +3) are quite stable with respect to dissociation and hydrolysis and possess the same chemical composition and geometry. The redox potential corresponding to the reaction being studied‚ Eo (Fe2+/Fe3+) is +0.44 V versus a normal hydrogen electrode (NHE). The standard reduction potential of the borate ion is Eo
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Experiment 6 titled “Organic Chemistry” and the purpose of this lab is to get familiar with some organic functional group and test certain reactions of selected functional groups. To do the first part of the experiment (combustion test)‚ instructor demonstration in hood‚ and record the observation. Part A (combustion of toluene) pour 1 milliliter of toluene into a evaporating dish and ignite it with a flaming wood splint. Most importantly put the flame with a watchglass. Part B (combustion of ethyl
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Abstract: It is important to be able to identify pathogenic bacteria that may be causing harm. Tomato crops can be affected by several different pathogenic bacteria. By using Koch’s postulates‚ it was determined that Pseudomonas syringae was the bacteria causing rot. There are four criteria that must be met when using Koch’s postulates. They are that the organism must be fund in all infected‚ the organism must be isolated in pure culture then once reinnoculated in a healthy host‚ must cause the
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the supplies are limited and rapidly depleted. One molecule of CP produces _1___ ATP. 6. Glucose is a major source of energy for synthesizing ATP. List the two sources of glucose: 1. _directly from the blood________________________ 2. _by hydrolysis of glycogen stored in the muscle cell__ 7. _glycolysis ___________ is the process that breaks down glucose. Name two products of the breakdown of glucose: 1. __2 ATP_______________________ 2. __ 2 pyruvic acid_______________________ If
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in solutions of ammonium acetate or of the acetates‚ carbonates‚ citrates or hydroxides of the alkali metals. ASA is stable in dry air‚ but gradually hydrolyses in contact with moisture to acetic and salicylic acids. In solution with alkalis‚ the hydrolysis proceeds rapidly and the clear solutions formed may consist entirely of acetate and salicylate. Aspirin is readily broken down in the body to salicylic acid‚
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BIO Chapter 2 Study Guide 1-Know the difference between an atom‚ an element and a compound. -Atom-The basic unit of a chemical element. -Element-A unique molecule that makes up all matter and cannot be broken down any further. -Compound- Two or more elements together 2-Understand and be able to apply the concept of the Atomic number and the Atomic mass of an element. -Atomic Number- The number of protons an element has. -Atomic Mass-The number of Protons + Neutrons. *the number of neutrons
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A potential renewable energy resource development and utilization of biomass energy Abstract I. Introduction II. Biomass resource and its energy value III. Utilization of biomass IV. Prospect of biomass utilization Wang Mengjie & Ding Suzhen Chinese Academy of Agricultural Engineering Research & Planning Beijing‚ P.R. China. Paper No.9408 Abstract One seventh of total energy consumption is from biomass which is the main energy resource for over 1.5 billion people in the world
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In our hypothesis we predicted that the enzymes in the pineapple will denature when the temperature is changed. The prediction was partly correct. Pineapples have special enzymes that denature gelatin molecules. Which is the reason why the pineapple and gelatin test tube remained filled with liquid‚ instead of turning into jelly which gelatin does when it’s molecules are not disturbed. Why our hypothesis was partly incorrect was lacked depth in that when changing the temperature by heating the pineapple
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the activation energy of a reaction Enzyme is 3D – allows it to associate with substrate (molecule that will go thru reaction) Enzyme brings two substrates together in correct orientation (dehydration synthesis) or stresses bonds of substrate (hydrolysis) - lowers activation energy for new bonds to be formed/ broken Different types of cells have different types of enzymes – affects structure/function of cell Implication: Enzymes are vital for living things in that it speeds up reactions that‚
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