Acids‚ Bases‚ and pH Lab In this lab the testing of whether or not a substance was an acid or a base occurred. Each substance was tested with the indicators red litmus paper‚ blue litmus paper‚ pH paper‚ phenolthalein‚ bromthymol blue‚ and phenol red. While the substances were tested the group noticed that the substances tested with the red and blue litmus paper‚ the phenolthatein‚ bronthmol blue were the easiest to interpret. The color changes that occurred when this indicator was put into a substance
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The purpose of this lab was to determine the concentration of NaCl or sodium chloride that is isotonic to elodea cells. First off‚ what is osmosis? Osmosis is this huge net of molecules moving through semi-permeable membrane to high concentration to direction where everything becomes balanced. This brings us to what osmolality is. Osmolality is related to osmosis and we know that osmosis has something to do with water so that being said‚ osmolality is number of osmoles of solute per liter in solution
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and also to prepare slides for observable bacteria culture from yogart. Procedure: Exercise 1: Using the Microscope - Viewing Prepared Slides I started out by reading and reviewed the science lab safety reinforcement Agreement and the instruction to oil immersion lens. After setting up my lab station I view the six prepared slides with 10x and 40x objctives lens. In each slide the differences was magnification and the 40x lans gave a clearer look of the specimen. The observation of slide e
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Darwin’s Finches Lab In this inquiry lab‚ we explored natural selection using a laboratory. We wanted to see what was the effect of the type of food available on the frequency of different types of bird beaks. Our hypothesis was that If the type of the food available changes‚ then the frequency of beak types will change‚ because birds with beaks more suited to the available food will be more successful over time. Variables: Independent Variable: type of food available
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The Virtual Lab – ELISA Test Lab: Immunology 09/04/2013 Instructors: Dr. Charlie Wilson Written by: Dipen Patel I. Objective: The purpose of the lab was to learn the procedure of performing an ELISA test to determine whether a particular antibody is present in a patient’s blood sample. ELISA is an abbreviation for “Enzyme-linked Immunosorbent Assay." II. Introduction: The interaction of antigen and antibody outside the body can be used to determine if patient
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to have in the body. A substrate is the material that is being broken down. In this case‚ the substrate would be hydrogen peroxide. The catalase‚ located in the liver‚ is being used to break down the substrate. Problem The purpose of this lab is to see if the enzyme‚ catalase‚ can be manipulated. We are testing the effects of pH‚ temperature and enzyme concentration. Hypothesis Controlled When we add peroxide to the liver it will bubble a lot and break down faster. When we add peroxide
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EC 12/19‚ 2010 Forensics Period 5 Lab: Make your own Dental Impression I. Objective: The objective of the lab “Look and Record” was to identify the castings of your own teeth. The lab was also used to see how important forensic odontoloogy really is. What can a forensic odonotologist see in a dental impression cast that can help identify an individual? II. Background: Forensic odontology is important in all cases. Impressions can determine many things in a case.
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Lab Report: Toothpickase and Enzymes September 19‚ 2012 Olivia DePhillips Lab Partner: Joy Morgan Meyers Signature: Introduction Enzymes are biological molecules that catalyze chemical reactions. In enzymatic reactions‚ the molecules at the beginning of the process‚ called substrates‚ are converted into different molecules‚ called products. Almost all chemical reactions in a biological cell need enzymes in order to occur at rates sufficient for life. Like all catalysts‚ enzymes work
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Lab‚ Week # 1 BALANCE LAB Introduction The purpose of this lab is to learn how to utilize two different balances to find the mass of different chemicals in the ChemLab program. A balance is an instrument used to determine the mass of a chemical. To accomplish this we use direct weighing and weighing by difference on both the centigram and electronic balances. Equipment 1 Centigram Balances 1 Electronic Balance 1 100ml Beakers 5 Copper Slugs 2 Unknown Weights (Label # 1‚ # 2)
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department Data security – Lab # 1 Lab Description Set-UID is an important security mechanism in Unix operating systems. When a Set-UID program is run‚ it assumes the owner’s privileges. For example‚ if the program’s owner is root‚ then when anyone runs this program‚ the program gains the root’s privileges during its execution. Set-UID allows us to do many interesting things‚ but unfortunately‚ it is also the culprit of many bad things. Therefore‚ the objective of this lab is two-fold: • Appreciate
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