on humans that they would have on animals. Secondly, animal testing is very expensive for the fact that the substances tested may never be used for anything. Finally, there are alternatives to animal testing. There are alternatives such as using a petri dish. For these reasons, animal testing should be banned. The outcomes on animals are rarely the same on humans. For example, the 1950’s pill thalidomide caused 10,000 babies to be born with severe deformities (ProCon.org). The pill was tested on
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OSI Seven Layer Model The Open System Interconnection model (OSI) defines internetworking in terms of a vertical stack of seven layers. The upper layers of the OSI model represent software that implements network services like encryption and connection management. The lower layers of the OSI model implement more primitive, hardware-oriented functions like routing, addressing, and flow control(Mitchell, 2011).The seven layers of the OSI model are - * Physical * DataLink * Network
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of Potassium in it. I ended up using 3.72 g of fertilizer for my experiment. Once i went through all the experiment steps with my partner, I retrieved a petri dish to place our sample in. The dish weighed 41.927 g with it empty. We placed our sample in the dish and let it sit over the four day weekend t dry, then reweighed it. The sample and petri dish has a mass of 46.010 g. Mass of sample: 46.010g-41.927g = 4.083 g of MgNH2PO4+6H Grams of P2O5 in fertilizer: 4.083g MgNH2PO4+6H X 12.62g P/100 g
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1. What is the purpose of flaming the loop before and after use? This process sterilizes the inoculating loop before the experiment. By passing the inoculating loop through the warmest part of the flame (the tip of the inner blue flame), the heat kills any microbes and prevents contaminating microorganisms from interfering with the integrity and accuracy and contaminating your experiment. This process is known as flame sterilization. Flaming the loop after the experiment once again kills any contaminating
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The allelopathic effects of juglone containing nuts Catherine Qin, Manavi Nagai, Whitney Hagins, and Reginald Hobbs* Department of Science AP Biology Lexington High School, 251 Waltham Street, Lexington, MA 02421 *Correspondence: rhobbs@sch.ci.lexington.ma.us Abstract Allelopathy is the inhibition of the growth of a plant by the allelochemicals, produced by a nearby plant, into their shared environment. It is a form of chemical warfare used by plants to defend their territory and resources, thus
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were added to a thermocycler. The thermocycler’s role is to provide strict control over the reaction temperature and duration of exposure to each distinct temperature, this ensures the amplification process. We also poured the prepared LB agar into petri dishes to be stored in the fridge as well as leaving our LB media in its container at our lab benches until further use for the upcoming weeks in lab. For this past week in lab transformation was carried out. The first thing we did was to
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Bacteria are very small organism, called microorganisms that are present in various types of environment and can only be seen using a microscope. They are classified in different ways depending on their cell wall, shape and genetic, they are called prokaryotic cells because they do not contain a nucleus and their DNA is spread throughout its cytoplasm. Bacteria can be found in the ocean, soil, inside the human gut, air, water and most of the materials we touch. There are some types of bacteria that
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The results from the experiment does not support my hypothesis about the role of the FIS binding site in the rR promoter. I believed that if an E. coli strain did not have an rR promoter sequence like Strain B, or if the FIS binding sequence was completed deleted like Strain C, it will be more difficult for transcription to begin. My hypothesis was that Strain A would be the most efficient because it had a fully intact FIS binding site. Clearly, this is not the case because from the results I collected
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The effect of glucose on the growth of mung beans as measured in percentages of glucose mixed in water Annie Spendrup I. Purpose The purpose of this lab was to examine the effect of a glucose-water mixture on the growth and development of mung beans. Different percentages of glucose (0%, 1%, 2%, 3%, and 4%) in 40 millilitres of distilled water were used to water the mung beans. The hypothesis is that seeds watered with a glucose water solution will grow faster and taller than the ones
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I. TITLE: GENE TRANSFER OF ANTIBIOTIC RESISTANCE AND BIOLUMINESCENCE IN ESCHERICHIA COLI II. INTRODUCTION A. Background on antibiotics 1. History of antibiotics a. Fleming’s discovery of penicillin and its early significance -antibiotic inhibition of protein synthesis, cell wall synthesis, and other cellular processes b. Antibiotic overuse led to bacterial resistance Background on the transfer of resistance genes from one bacterium to another 1. Location of
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