CATALASE Catalase is a common enzyme found in nearly all living organisms exposed to oxygen. It catalyzes the decomposition of hydrogen peroxide to water and oxygen. It is a very important enzyme in reproductive reactions. Likewise‚ catalase has one of the highest turnover numbers of all enzymes; one catalase molecule can convert millions of molecules of hydrogen peroxide to water and oxygen each second. Catalase is a tetramer of four polypeptide chains‚ each over 500 amino acids long. It contains
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Experimental Errors and Uncertainty Data: The data table that follows shows data taken in a free-fall experiment. Measurements were made of the distance of fall (Y) at each of the four precisely measured times. Time‚ t (s) Dist‚ y1 (m) Dist‚ y2 (m) Dist‚ y3 (m) Dist‚ y4 (m) Dist‚ y5 (m) <y> σ t2 0 0 0 0 0 0 0.5 1.0 1.4 1.1 1.4 1.5 0.75 2.6 3.2 2.8 2.5 3.1 1.0 4.8 4.4 5.1 4.7 4.8 1.25 8.2 7.9 7.5 8.1 7.4 Procedures From the above data perform the following Tasks. Task 1. Complete
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Pamantasan ng Lungsod ng Maynila College of Human Development Department of Psychology In partial fulfillment to the requirements In Experimental Psychology Laboratory Report numbers 1‚ 2‚ & 3 In Experimental Psychology Submitted by: Jake Hilson C. Lapira BS Psychology 3-1 Submitted to: Prof. Mary Easter Claire Perez-Torres February 2014 Abstract Introduction People do not think or act instantaneously. The time required to take action depends systematically
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Random Error There were many sources of random errors that could be a factor involved in the variation of the group’s results. Randoms errors are human errors‚ they can affect the results gathered and contribute to reading errors and flaws within human reflexes. · Size of the liver cubes: As the liver cubes needed to be cut by each individual group‚ the sizes between the groups may have varied. The required size for the lamb liver cubes was 1cm3 ‚ however the task of cutting the liver into all
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4.3 (b) To investigate the effect of pH on the rate of catalase activity Teacher Notes Apparatus required per class group of 24 students Chopping board 12 Knife 12 Weigh boats 12 100 ml Graduated cylinders 36 Boiling tube 36 Syringe 12 Electronic balance 3 Dropper 12 Timer 12 Labels 36 Thermometer 12 Water bath 3 Enzyme source eg. Radishes/celery Hydrogen peroxide Range of buffer solutions pH paper Washing up liquid Disposable gloves The apparatus
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Percent Error occurs due to many factors. In this lab by the graph I can state that there was a 100% error in all three unknown substances‚ Pure Leaf Lemon Tea‚ Sprite‚ and Tree Ripe Lemonade. This could be a result of not having properly zeroed the scale or the scale glitching when it came to zeroing it‚ which would have added extra mass and skewed the results. Another factor that could have resulted in a high percent error would have been the scale itself glitching which would have caused the wrong
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bacteria. For Unknown A‚ I ran six tests. I first isolated the bacterium from the second bacterium and found a clear growth (Table 1‚ Figure 1). Secondly‚ I ran a gram stain and found a gram positive‚ cocci bacterium (Table 1‚ Figure 2). Third‚ I ran a catalase test in which was negative (Table 1). From here‚ I determined a starch hydrolysis test would be necessary to distinguish between different bacteria. The result was negative (Table 1). After starch hydrolysis‚ I ran an MSA plate‚ hoping it would give
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Lab:Measurement Error (Bounds) Purpose The purpose of this experiment was to understand and recognize that errors do occur when doing experiments and making measurements. With this lab we had to understand how to analyze the data using measurement bounds. Theory: In this experiment we were to find the density of the wood we are measuring by using the method of upper bound and lower bound. Density is a physical property of matter. Every element and compound has its very own unique density
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After 4 gram stains‚ the slide was blot dried and observed under microscope at 100x with oil immersion. The slide either appear in pink (gram-negative) or purple (gram-positive). Catalase Test: Catalase test enzyme detection of microorganisms‚ catalase hydrolysis hydrogen peroxide (H2O2) into H2O and O2. The catalase test was performed by used a sterile transfer loop been flamed to remove small amount of bacteria from slant agar and placed on the slide. Then
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Effect of an Orange on Catalase Activity in Comparison with a Potato Introduction Catalysts are substances that increase chemical reactions while using less energy. They also remain unchanged after use‚ which enables it to be used repeatedly. Cells have special catalysts called enzymes‚ which are specialized proteins that help accelerate chemical cell reactions. (Evert‚ RF & Eichhorn‚ SE 2013). Enzymes also control plant metabolic processes such as respiration (Evert RF‚ Eichhorn SE & Perry JB
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