Title: Enzyme Activity Aim: To investigate the activity of the enzyme catalase in liver and potatoes‚ and to investigate the effect of temperature‚ surface area‚ pH and certain chemicals on the activity of catalase. Equipment: Dilute hydrochloric acid solution x 1ml 10 volume hydrogen peroxide x 100ml Copper sulphate solution x 1ml Aluminum nitrate solution x 1ml Zinc nitrate solution x 1ml dilute NaOH solution x 1ml Mortar and pestle x 1 25ml Beaker x 1 Hot plate x1
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The Effects of Antibiotics on Bacterial Growth Biology II 1996 Bacteria are the most common and ancient microorganisms on earth. Most bacteria are microscopic‚ measuring 1 micron in length. However‚ colonies of bacteria grown in a laboratory petri dish can be seen with the unaided eye. There are many divisions and classifications of bacteria that assist in identifying them. The first two types of bacteria are archaebacteria and eubacteria. Both groups have common ancestors dating to more
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identify an organism from a mixture of two unknown bacterial species. In order to accomplish this‚ I first plated my unknown mixture on Tryptic Soy Agar (TSA)‚ Columbia Naladixic Acid (CNA)‚ and MacConkey’s Agar (MAC) plates. After 48 hours of incubation‚ it was unclear that two different bacterial colonies had grown on my TSA plate. Only one type of colony was evident. However‚ it was apparent that I had successfully isolated two different bacterial species by examining my MAC and CNA plates. Only
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course‚ many still do not know the major risks of the brain injury‚ especially with football providing such large collisions to the head. More thorough training is needed to show them the true risks‚ teaching the importance of concussion precautions and why they cannot tell a kid to shake it off and keep playing. It would be beneficial to teach the coaches the long term effects of a concussion as well‚ making them realize how brutal the injury actually is‚ and that players do not always fully recover
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1. The strong will to deeply understand the field and build the business. Kalin’s enthusiastic research on feta cheese before and during summer 2001 shows his firm will for success. He went on field and online to search any information about food imports. Furthermore‚ when he found himself struggling to maintain his pricing structure‚ he had a major breakthrough – his innovation. He established website Malincho and started to promote credit sales. 2. Kalin’s knowledge in finance and accounting indeed
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Do You Believe‚ That You Can Fly? “It’s impossible to live without failing at something‚ unless you live so cautiously that you might as well not have lived at all. In which case‚ you’ve failed by default.” – J.K. Rowling. Too many pilots have lost the confidence to fly. A one time crash‚ or a flight instructor’s demeaning attitude has left them with the belief that taking off again is just not for them. Goals and dreams have been abandoned‚ either forever‚ or put on long term hold‚ because of
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products; Scope Mouthwash (Scope)‚ LISTERINE® Antiseptic Mouthwash (Listerine)‚ Bactine Original First Aid Liquid (Bactine)‚ and Povidone-Iodine Solution‚ 10% Topical Microbicide Antiseptic (Iodine) are an appropriate antiseptic to can kill a sample bacterial contaminant found in the local environment‚ and if so‚ which is the most effective? The purpose of this experiment is to determine the antibacterial effectiveness of Scope‚ Listerine‚ Bactine‚ and Iodine in relation to each other. Scope‚ Listerine
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Restriction Enzymes Restriction enzymes (also known as restriction endonucleases) are a group of bacterial enzymes which cut double-stranded DNA (dsDNA) into smaller fragments at specific points. They are a defence mechanism used by bacteria to cleave the DNA of invading viruses‚ thereby restricting their expression. The exploitation of restriction enzymes ability to cut large pieces of DNA into smaller fragments (called restriction fragments) and the highly specific way in which they do this has
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Have you ever been skeptical about what you eat everyday is not essential as you think? You may doubt that what am I talking about. I am going to talk about something that you eat everyday. Guess what? That is rice! Recently‚ my mother decided to choose brown rice instead of white rice as our food staple. This raises my attention about white rice. At present‚ half the world’s population sees rice as their staple food‚ mainly in parts of Asia‚ southern Europe‚ tropical America and Africa. Among the
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Enzyme Lab Experiments Problem: How can we demonstrate how enzymes work? What happens if we alter the environment of an enzyme? Materials: G;lucose Test Strips Test Tubes Pipettes Raw Hamburg Lettuce Potato Raw Liver Chalk Beakers Dairy Lactose Tablet Water Sugar Solo Cups Hot Plate Knife Gloves Skim Milk Glow Sticks Peroxide Hypothesis: 1. If we change the environment via temperature the glow stick will Its intensity will change 2. If hydrogen peroxide is added to a certain food liver
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