How Enzymes Work In Different Environments By Sarah Smith Biology1111 October 20‚ 2011 Lab Partner: Nellie Greer ABSTRACT Peroxidase is an enzyme found in potatoes that catalyzes the breakdown of hydrogen peroxide‚ H2O2‚ into O2 gas and water. We examined the different pH environments that can affect the enzyme activity during the breakdown of H2O2. In order to do this‚ we added different levels of pH‚ low‚ medium‚ and high‚ into different test tubes with the enzyme and H2O2‚
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Cited: Reece‚ J. (2005). Biology. (9ed.‚ Vol. 1‚ pp. 153-155). San Francisco‚ California: Pearson education.
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Cited: 1. Johnson‚ G.B. 2010. Essentials of the Living World. McGraw Hill companies. 2. Mbuthia‚ K.W. 2012. Laboratory Manual for Introduction to Biology 1040. Thomson Publishing Company.
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Long stands of double helical DNA can fit into the nucleus of a single cell because DNA is specially packaged through a series of compaction events to fit easily within cell nuclei. Even though the length of DNA per cell is about 100‚000 times as long as the cell itself‚ it only takes up only about 10 percent of the cell’s volume. The DNA molecule‚ in order to condense‚ wraps itself around groups of histone proteins‚ and then the chromatin folds back on it‚ nucelosomes pack together to create a compact
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following) more; less; same) neutrons. 10. Electrons are arranged in electron shells. The electron shell closest to the nucleus has a maximum capacity of _2___ electrons‚ whereas the second shell holds a maximum of _8__ electrons for elements in Biology. 11. The outermost shell is referred to as the __valance__ shell. The electrons in the outermost shell are referred to as the _valance_ electrons. 12. Trick Question: How many electrons does 42He need to be stable? _It is balanced__ 13.
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Wave Nature of Light Objective: The purpose of this lab is to investigate interference‚ otherwise known as the diffraction of light. A beam of light acts a wave‚ and we are able to use equations so calculate the wavelength of the light used. The diffraction of a straight edge demonstrates that light waves bend around straight edges‚ allowing light to enter an area of shadow. When waves are superposed‚ they reinforce each other when crests are in phase and cancel out when they are not in phase
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Transformation of E. coli by plasmid DNA 1. Table showing the results from the selective plates |Plate |Plasmid |Contents of plates |Number of colony | | | | |White |Blue | |1 |Ligation mixture |Ampiclillin + X- gal + IPTG |10 |0
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PEES 4200W- Physiology of Exercise Lab #2: Metabolism and Energy Expenditure 1. The Respiratory exchange ratio is the ratio of the volume of carbon dioxide produced and oxygen consumed. The ratio indicates the energy that the subject is expending for indirect calorimetry‚ how efficient the subject ’s body is at utilizing the oxygen inhaled‚ as well as the main substrate being used for energy during varying intensities of exercise. During rest the volume of carbon dioxide was 0.73L/min‚ the volume
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2.1. Test article Carmoisine also known as E122 or Food Red 3‚ Brillant carmoisine O‚ Azorubin S‚ Acid Red 14‚ CAS No. 3567-69-9 or C.I. 14720‚ is a di sodium salt of disulfonates of 2-(2 quinolyl) – 1‚ 3 indandione and is obtained as red to maroon colour powder (Fig. 1). Dye content in the substance is 88%‚ sodium chloride/sulphate is less than 12%‚ water insoluble matter less than 0.2%‚ Arsenic less than 1 ppm‚ lead less than 0.01 ppm‚ heavy metals less than 40 ppm. Carmoisine was certified by
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1. Introduction Welcome to GCSE Biology. This year we will be studying OCR 21st Century science. This is a modular course of 7 units and a piece of coursework. 2. Your Lecturers In the box below write the name of your lecturer‚ the times of your lessons and which rooms they are in. You should also write your lecturers staff room and how to contact them (their office phone number and college e-mail addresses). Lecturer Times & Rooms Contact details 3. Structure of the course
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