In this experiment‚ enzymes were exposed to changes in temperature‚ pH‚ and concentration. Introduction In this experiment‚ the environment of the enzyme was altered‚ by increasing or decreasing the temperature‚ pH and concentration. The purpose was to observe if and how the enzyme would react to such changes. This experiment tested whether heating or cooling a catalase would increase or decrease the rate of reaction. The temperature was increased by placing the test tube in boiling water
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Results: The mealworms that were in the room temperature water have a higher cellular respiration rate than the mealworms in the cold water. This is because while they are in the cold water‚ the mealworm’s body slows down which decreases the amount of CO2 that is being produced. Unlike the mealworms in room temperature water‚ their cellular respiration was higher because their body temperature remained the same creating CO2 at a faster rate. Since there were two different controlled groups‚ there
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Effects of pH on the Function of Enzymes Rena Mototani Glen Rock High School Advanced Biology 2014-2015 Effects of pH on the Function of Catalase Rena Mototani Problem: How does the pH of a cell affect the function of the enzyme catalase? Introduction In this lab‚ we experimented the effects of pH on the function of the enzyme catalase. Catalase is an enzyme that brings about the reaction by which hydrogen peroxide is decomposed to water and oxygen (Encyclopedia Britannica). The
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Osmosis is a passive movement of water through a selectively permeable membrane moves from an area of higher concentration to an area of lower concentration. In this lab‚ we can determine the direction of diffusion of small molecules by measuring the diffusion of small molecules through dialysis tubing. This tubing acts as a selectively permeable membrane‚ and allow to pass larger molecules slowly. Introduction: Cells have kinetic energy and it causes the molecules of the cell to move around
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cause skin‚ ear and eye infections when present in large numbers and outbreaks of skin infections (especially to people with CF and immunocompromised). The primary health effect associated with the presence of P. aeruginosa is folliculitis‚ an infection of the hair follicles that may result in a pustular rash. Another health effect is otitis externa‚ repeated exposure to water is thought to remove the protective wax coating of the external ear canal‚ predisposing it to infection. Consequently‚ P. aeruginosa
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the temperature difference between water and n-propanol was close at about 2 ℃ difference. In which‚ while distillation the distilled solution would have both traces of both water and n-propanol. This can be seen in the simple refractive graphs for n-propanol since each consecutive 5 mL have traces of both water and n-propanol. For example‚ the n-propanol simple refractive graph were spread out throughout the graph with the mole fractions of 0.73‚ 0.75‚ 0.83‚ 0.571. Also‚ the temperatures are spread
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SCIE211 Phase 2 Lab Report Title: Speciation Instructions: You will need to write a 1-page lab report using the scientific method to answer the following question: • What would happen if a species within a population were suddenly split into 2 groups by an earthquake that creates a physical barrier like a canyon? When your lab report is complete‚ post it in Submitted Assignment files. Part I: Use the animated time progression of speciation to help you write up your lab report. Part II: Write
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couple of key things about lab safety and procedure during this experiment. While working with the hot plates‚ I learned to pay a lot of attention to whether or not the hot plate was plugged in or turned on‚ as well as whether or not the wax was getting too hot. Measuring each substance into the cup was an important experience because it taught me to be deliberate and careful when measuring so as to not waste materials‚ making sure we did not have to start over. While this lab is a good starting point
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Unknown Lab Report Dr. Nathan Cahoone Microbiology 204 December 9‚ 2010 Introduction There are many reasons for knowing the identity of microorganisms. The study and test was done by applying all of the methods that have been learned so far in the microbiology laboratory class for the identification of an unknown bacterium which I was using unknown #25. Results Unknown #25 had the following morphology on a streak plate: medium sized butyrous cream colored colony. Gram-staining was utilized
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substrate concentration will no longer affect the rate of reaction. The independent variable in this investigation is the varying concentrations of the substrate (Hydrogen Peroxide: 1%‚ 3%‚ 5% and 6%)The dependent variable was the rate of enzyme catalase activity‚ which was measured by the volume of froth produced after one minute.The concentration and volume of liver extract (source of catalase) used was kept constant at 10ml per solution. This factor was kept constant‚ as the concentration of the enzyme
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