UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS General Certificate of Education Advanced Subsidiary Level and Advanced Level CHAPTERS CLASSIFIED:ENZYMES 9700/2 BIOLOGY Paper 2 Structured Question AS For year 2014 Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your candidate number and name on all the work you hand in. Write in dark blue or black pen. You may use a soft pencil for any diagrams‚ graphs or rough
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Biology coursework: Substrate specificity in yeast AIM: To find out which substrate (glucose‚ starch‚ maltose‚ sucrose or lactose)‚ does yeast‚ the organism containing the enzyme‚ breaks down the quickest. Introduction: Usually‚ every enzyme has a specific substrate that is what we call the “lock and key” theory. We can try the reaction of an enzyme with different substrates and this enzyme will just work well with one of those substrates. One type of reaction catalyzed by enzymes is anaerobic respiration
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the filtration rate both decreased. 5. When the radius of the afferent arteriole was increased‚ the pressure and the filtration rate both increased. 6. When the radius of the efferent arteriole was decreased‚ the pressure and the filtration rate both increased. 7. When the radius of the efferent arteriole was increased‚ the pressure and the filtration rate both decreased. Activity 2: 1. When you increase the blood pressure‚ the glomerular capillary pressure and the glomerular filtration rate
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Plant Tissue Culture 151 Chapter 9 Plant Tissue Culture Techniques Lorraine Mineo Department of Biology Lafayette College Easton‚ Pennsylvania 18042 Lorraine Buzas Mineo (B.S.‚ Muhlenberg College; M.A.‚ Duke University) is a lecturer in the Department of Biology‚ Lafayette College‚ and has taught botany since 1978 and supervised the General Biology Laboratories since 1970. Research interests in physiological and forest ecology have culminated in several publications. Other interests include
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Flow Tube Radius on Glomerular filtration. Data/Results: Questions: Please answer the questions in complete sentences and explain your answers. 1. What effect does increasing the afferent radius have on glomerular filtration rate and pressure? Both the rate and the pressure increase as you increase the afferent radius. 2. What effect will decreasing the efferent radius have on glomerular filtration rate? When I decreased the efferent radius‚ it increased the filtration rate. Please see table below:
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Copyright The McGraw-Hill Companies‚ Inc. Permission required for reproduction or display. Hole’s Essentials of Human Anatomy & Physiology David Shier Jackie Butler Ricki Lewis Created by Lu Anne Clark Professor of Science‚ Lansing Community College Chapter 17 Lecture Outlines* *See PowerPoint image slides for all figures and tables pre-inserted into PowerPoint without notes”. 17 -1 Chapter 17 Urinary System 17 -2 CopyrightThe McGraw-Hill Companies‚ Inc. Permission required for reproduction
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was added while on the second set denatured enzyme was added instead. Though this experiment was not performed due to the bad extraction of invertase and loss of time‚ the expected graph result is a hyperbola; where in optimum pH is at pH 5. And sucrose hydrolyzed has the same trend as the absorbance. II. INTRODUCTION Enzymes are proteins that catalyze chemical reactions. In enzymatic reactions‚ the molecules at the beginning of the process are called substrates‚ and they are converted
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7–9) 9. Smaller MWCO numbers translate to smaller pore sizes‚ which correlate with lower filtration rate. Powdered charcoal did not appear in the filtrate using any membrane. Increasing the force driving filtration increases filtration rate. Increasing the pressure gradient effectively increases the filtration rate. By examining the filtration results‚ we can predict that the molecular weight of glucose must be greater than NaCl but less than powdered charcoal
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intercellular recognition‚ infection processes‚ and certain types of cancer. Carbohydrates analysis is of interest to the food industry but also many fields in life sciences. Analytes of interest include simple mono- or disaccharides (such as glucose and sucrose)‚ oligosaccharides (Maltodextrin)‚ polysaccharides (starch‚ cellulose) and glycoproteins. • • • • Carbohydrates in food & life sciences Pulsed Amperometric Detection Robust & reproducible Analysis Flexcell with exchangeable working electrode
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Limitations Sucrose concentration Organism 0% 15% 30% P. fluorescens +4 +4 +2 S. salivarius +2 +3 - S. cerevisiae +2 +4 +3 5. Fill in the spaces in the following chart with a + or -. For the mineral salts results‚ score growth using - for no growth and +1 to +4 for growth. Test E.coli K.pneumoniae S.epidermidis M.luteus Glucose Fermentation: acid gas + + + - Mineral salts plus glucose +2 +3 +3 +2 Lactose Fermentation: Acid gas + + + - Mineral salts plus lactose +2 +4 +3 +2 Sucrose Fermentation:
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