Bacterial Fermentation Secondary article Article Contents Volker Mu¨ller‚ Ludwig-Maximilians-Universita¨t Mu¨nchen‚ Munich‚ Germany . Introduction Under anaerobic conditions‚ in the dark and in the absence of electron acceptors‚ organic compounds are catabolized by strictly anaerobic or facultatively anaerobic bacteria by internally balanced oxidation–reduction reactions‚ a process called fermentation. In fermentation‚ the organic compound serves as both electron donor and acceptor‚ and adenosine
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Microbiology Laboratory Report Identification of Unknown Bacteria 03/10/05- 04/01/05 Authors: Richard Hendricks‚ Jessica Prebish; NMU Abstract: Broth culture 16 was randomly selected by our group and subjected to qualitative tests for taxonomic identification. The culture did appear homogenous throughout the testing period and is currently retained by Northern Michigan University’s department of Microbiology. We suggest that culture 16 is an example of Escherichia coli. Background: Techniques
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Balloon Respiration Lab Introduction/ Background Cellular respiration is a process that releases chemical energy from glucose and other carbon-based molecules to produce ATP when oxygen is present. The formula for cellular respiration is C6H12O6+ 6O2= 6CO2= 6H2O. The process of respiration contains three main parts‚ glycolysis‚ Krebs cycle‚ and the Electron Transport Chain. The process of glycolysis takes place in the cytoplasm and is considered an anaerobic process which splits glucose into two
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Fermentation of Carbohydrates: Ethanol from Sucrose Objective: To demonstrate a fermentation process‚ isolate the ethanol produced by fractional distillation‚ determine the composition of the ethanol solution recovered‚ and make stoichiometric and yield calculations. Procedures: Fermentation Weigh out 20.0 g of sucrose and place it into a 250-mL Erlenmeyer flask. Add 100 mL of water and gently shake until all the sucrose has dissolved. To this solution add 0.60 g of dipotassium hydrogen phosphate
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Making Bread with Yeast By Rebecca Coles Introduction Bread is such a common food‚ who would expect it to be made in such a fascinating and clever way? A simple loaf contains just four main ingredients; flour (the main ingredient)‚ warm water (the yeast prefer the water warm)‚ salt and of course the yeast‚ tiny microscopic fungi that help the bread rise. Although fascinating the process is surprisingly simple; first‚ the flour‚ sugar and water is mixed together with yeast to make the bread
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Fermentation is a process performed by cells in the absence of oxygen to produce small amounts of ATP. During this process the six-carbon sugar glucose is broken down into two molecules of the three-carbon organic acid‚ pyruvic acid‚ coupled with the transfer of chemical energy to make adenosine triphosphate (ATP). Fermentation is used by many producers to make many of the commodities which we are used to today. Some of these commodities include yogurt‚ cheese‚ wine‚ bread‚ beer‚ rum‚ and even
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Laboratory Report The Plasma Membrane I. Introduction The Plasma membrane is the edge of life‚ the boundary that separates the cell from its surroundings. It controls the traffic of materials in and out of the cell. (Reece‚ 2011). It is incredibly thin that is very vital in maintaining the integrity of the cell. Not only does the plasma membrane bind the other organelles‚ it also forms a dynamic structure which gives them their remarkable activity and selectivity. (Hickman‚ 2008). Diffusion
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BioLab3 Lab Report 7 Cellular Respiration Answer Key Student Name: I. The ATP Cycle Define the following terms: Autotroph Heterotroph Aerobic respiration Anaerobic respiration Complete the chart below: Letter Defining Term A B C D II. Anaerobic Respiration Define the following terms: Alcoholic fermentation EXERCISE 1 – Alcoholic fermentation At intervals of 20‚ 40‚ and 60 minutes‚ the tubes are removed. Record the
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Bubble Inside a Bubble Materials • • • • • • • • Granulated sugar (we had our best results using Imperial Sugar and Dixie Crystals) Dish soap Water Tablespoon Scissors Pipette Cup Adult supervision Bubbles form because of a combination of water’s hydrogen bonds and the oily film you can see shimmer in the light. The oily film you see is actually two separate layers of soap attached to‚ and surrounding‚ hydrogen-bonded water. Solar Oven S’mores Materials • Pizza box • Two clear sheet protectors
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Q1. Why should a four place analytical balance not be used in weighing a sample if the manual requests only one decimal place accuracy? Ans. We use the analytical balance where we need to weigh the small amount which needs a high degree of accuracy. Whereas‚ the manual requests only one decimal place accuracy which is not that much important and the time is consumed more to use the analytical balance with four decimal places. Q2. How is the pH meter calibrated? Ans. Firstly‚ The pH meter is calibrated
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