Bacterial Smears Are Fixed before Staining to? Answer It is important to heat fix the bacterial smear before staining so as to‚ kill the bacteria‚ firmly adhere the smear on to the microscopic slide to prevent washing off during staining‚ and to allow the sample to readily take up the stain. Reference: www2.hendrix.edu What is the purpose of heat- fixing the smear? It helps the cells adhere to the slide so that they can be stained. The purpose of heat fixing is to kill the organisms without
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Scientific Investigation: Designing an Experiment Jeremy Barrett BIO-101-C02 February 4‚ 2015 Introduction Different parts of the body of an organism have been observed to grow at different rates during development. When parts of the body grow disproportionately to one-another‚ we call it allometric growth. The term‚ isometric growth‚ is used when describing body parts which maintain the same ratio throughout development. The purpose of this experiment is to determine whether two chosen body parts
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LAB Report #3 Introduction: In this lab we have focus on Isolation of bacteria from environment. Microorganisms are found throughout the environment: in the air and water; on the surface of any object such as clothes‚ walls‚ furniture; in soil and dust; and on and in our own bodies (skin and mucous membranes). In order to demonstrate the ubiquity and diversity of microbes in the environment‚ samples from immediate areas of the environment and/or from your body will be obtained and cultured
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Lab Report: Antibiotic Evaluation by the Kirby-Bauer Method Introduction Chemical antimicrobial agents are chemical compounds capable of either inhibiting the growth of microorganisms or killing them outright. Those which are taken internally to alleviate the symptoms of or promote healing from disease are called chemotherapeutic drugs‚ and among these is a class of compounds called antibiotics. In order for a chemotherapeutic drug to be classed as an antibiotic‚ it must be produced by
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Glowing Bacteria Lab Introduction- 1. Transformation involves the transfer of genetic information into a cell by directly taking up foreign DNA from its surroundings. This DNA is then incorporated into the host cell’s own DNA. This transformation usually occurs within plasmids‚ small circular DNA molecules separate from its chromosome. After the recipient cell is infected with the DNA‚ the cell will move on with replication‚ producing offspring with traits encoded by the plasmid. These plasmids
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Measurement of Capacitance using Arduino – An Interrupt-based Approach: Part I SAIKAT PATRA‚ SHIBENDU MAHATA Introduction Capacitive sensors are widely employed to measure various physical and chemical process parameters such as displacement‚ acceleration‚ thickness‚ force‚ pressure‚ stress‚ level‚ and humidity. The measured value of capacitance is then calibrated in terms of the process parameter for indication and/or control applications. This project presents an interrupt-based approach by
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Using a Dumas method‚ you are asked to identify the unknown pure liquid by comparing the molar masses of the given possible substances (ethanol‚ methanol‚ isopropanol‚ acetone). Introduction Dumas Method allows us to measure the molar mass of the substance‚ using the Ideal Gas Law. The Ideal Gas Law‚ PV=nRT‚ explains the behaviour of the gases that are near 100kPa and in the room temperature. This equation shows the product of the pressure(P) and volume(V) equals to the product of the number of moles(n)
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S1 Beginning with Science 02: Scientific Investigation Scenario 1. 2. Describe why the investigation above is not adequate to explain what types of rocks will dissolve in water. They need to use the same rocks from the backyard. You can’t compare different types of rocks. Just because it appears to shrink doesn’t mean it actually did. You need real data of what the mass of the rocks were before the rainstorm. 2. Using what Christopher and Kate have already observed‚ suggest a possible hypothesis
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Homelessness: Scientific Method Research SOCS 185 February 8‚ 2011 Homelessness is an ongoing social problem in the U.S. On top of being without shelter‚ these individuals are faced with a vast array of dangers that individuals with shelter do not face. These dangers may include exposure to inclement weather conditions‚ lack of health care‚ hate crime activity‚ substance abuse‚ and ultimately death. Acquiring homeless rates with intentions of conducting data research can be difficult being
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Nehad Omara Thursday 27‚ 2012 Francesco Redi‚ the Scientific Method I have reticently done the virtual experiment lab labeled Meats and Maggots‚ where in this lab I recreated Sir Francesco Redi experiment of meat rotting. He originally did this to show the life of maggots did not come from meat. That really the fly’s which arrive to the unsealed meat cussed the maggots to exist on the meat. Going throw this lab I recreated his Scientific Method step by step to see how it is he come to this discover
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