Lab Practicum‚ Micro 200‚ study guide When you did your hand wash experiment‚ you decided a variable to test‚ say‚ hot vs cold water‚ you called this variable an “experimental variable” since it was the variable you were testing experimentally. In order to get meaningful data‚ you need to keep other things the same‚ for example the washing time had to be the same for both‚ you called the washing time a _Control_______ variable. Through the semester‚ you have used two bacteria that produce
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Those colonies were subjected to a Gram-stain to ensure that P. larvae‚ a Gram-positive bacterium was isolated (Figure 7). However‚ there was a presence of other bacteria visible on the Gram-stain. Therefore‚ the catalase negative colonies were streaked onto MYPGP agar to further isolate P. larvae. The pale colonies that grew on those plates were subjected to a 3%
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UNIVERSITI TEKNOLOGI MARA FAKULTI KEJURUTERAAN KIMIA ENGINEERING CHEMISTRY LABORATORY (CHE 485) GROUP : GROUP 1 EXPERIMENT : 1 - DETERMINATION OF THE CONCENTRATION OF ACETIC ACID IN VINEGAR DATE PERFORMED : 26TH OF SEPTEMBER 2013 SEMESTER : 1 PROGRAMME/CODE : EH220 - BACHELOR OF CHEMICAL ENGINEERING (HONS.) Table of content NO Title Allocated Marks (%) Marks 1 Abstract / Summary 5 2 Introduction 5 3 Aims 5 4 Theory 5 5 Apparatus 5 6
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Gongora 12th December‚ 2014 MCB 3020L- Section 018 Unknown #16 Abstract This report contains the background information on gram positive and gram negative bacteria‚ which will aid in understanding the use of specific laboratory experiments to distinguish between the two types of bacteria. Included are the materials and methods used to identify the gram positive and gram negative bacteria and methods which also differentiate between microbes of each group. The implications of the methods of identification
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Investigation Investigate the amount of heat evolved when magnesium reacts with dilute acids. Planning What I am going to do I am going to find out how much heat is given out when magnesium reacts with a variety of dilute acids. In order to make comparisons between the acids‚ I shall use my results to work out how much heat would be given out if 1 mole of magnesium reacted with an excess of each acid. The acids I shall use are hydrochloric acid‚ sulphuric acid‚ nitric acid and ethanoic acid
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tearing it tangentially from its lower surface. ii) Put the leaf in a watch glass containing water. iii) Add a few drops of safranine into the watch glass to stain the peel. iv) Take a clean glass slide and with the help of a fine brush transfer the peel on to the glass slide. v) Remove the excess water and stain by using blotting paper. vi) Put a drop of glycerine over the peel and gently place a cover slip over itwith the help of a needle avoiding any air
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Abstract Through three different experiments we were to find the quality of NaCl as a deicer. These experiments included testing the freezing point depression of NaCl in solution at two different concentrations‚ testing for the H of an aqueous NaCl solution‚ and combining NaCl with MgCl2 in an aqueous solution to test for freezing point depression. Through these various experiments we found NaCl to be the best deicer for our region due to its proficient freezing point depression and its cost
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Isolation and Identification of Staphylococcus aureus and epidermidis Wendy Heck Bio 175: General Microbiology Fall 2012-11-21 Staphylococcus aureus is the most pathogenic for humans and Staphylococcus epidermidis is part of the normal flora and is of low pathogenicity. Staphylococcus epidermidis and Staphylococcus aureus are two medically important species of bacteria. A culture from the nose and throat was taken to perform whether or not Staphylococcus epidermidis or Staphylococcus aureus
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dots per second‚ 24 dots 24 dots ÷60 dots per second=.400 seconds t=.400 s - 11.) 50 gram= dt=v-bar‚ d=-.792 m ÷ t=.400 s = -1.98 m/s v-bar=-1.98m/s 100 gram= dt=v-bar‚ d=-.783 m ÷ t= .400 s = -1.96 m/s v-bar=-1.96 m/s 12.) 50 gram= ∆vt=a v-bar=vf-vi ‚ v-bar=-1.98m/s vi=0 m/s 2(-1.98m/s)=vf vf=-3.96m/s ∆v=-3.96 a=-3.96 m/s ÷ 0.400 s a=-9.90 m/s2 100 gram= ∆vt=a v-bar=vf-vi ‚ v-bar=-1.96m/s vi=0 m/s 2(-1.96m/s)=vf vf=-3.92m/s ∆v=-3.96 a=-3
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African Diaspora and the World After reading the short story “Diaspora” by Joanne Hyppolite‚ I got a vivid understanding of how diaspora can have an effect on one’s identity. Over the past month we have studied many theories and concepts concerning race‚ gender‚ and politics. There are three theories that capture the essence of Joanne Hyppolite’s worldview as a Haitian growing up in America: intersectionality‚ identity‚ and diaspora. Individuals oftentimes experience the theory of Intersectionality
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