BIO 211 Lab Section 11 February 15‚ 2012 Effects of Temperature on Enzymatic Activity Abstract Temperature is a measure of kinetic energy. As this movement increases‚ collision rate and intensity‚ and therefore reaction rates‚ increase. This experiment was conducted to determine if there is a minimum temperature that increase kinetic energy and denature enzymes to slow enzymatic reactions or fail to catalyze them. The experimental results indicate an increase in temperature will increase reaction
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The Effect of Temperature on Enzyme Activity and Oxygen Production Throughout this report you will gain information as to how temperature effects the amount of oxygen produced in an enzyme- catalase experiment. In the experiment we used liver extract as a catalase and created a chemical reaction within a reaction chamber between the catalase and hydrogen peroxide as well as three different controlled temperatures. In the procedure below there will be a step by step process as to how
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called “the universal solvent.” 6. Why are the freezing and boiling points of water higher than would be expected for a compound of its molecular makeup? Water melts and boils at the relatively high temperature of 0 degree Celsius (32 degrees Fahrenheit) and 100 degrees Celsius (212 degrees Fahrenheit)‚ respectively‚ because additional heat energy is required to overcome its hydrogen bonds and van der Waals forces. Thus‚ if not for the unusual geometry and resulting polarity of the water molecule
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Book one - Follow workplace hygiene procedures Hygiene aims to Positive attitude towards personal cleanliness Awareness of hygienic practices Appropriate hygienic handling and storage of commodities and equipment in the kitchen. Hygiene risks Three Categories; 1. Personal hygiene Poor personal grooming Wearing nail polish or jewelry Not washing hands 2. Environmental hygiene Pets in the kitchen Chipped plates‚ cups etc No fly screens Not the correct method of garbage
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some types of milk based on the manufacturing process: -UHT Liquid Milk UHT is stands for Ultra High Temperature Processing or Ultra Heat Treatment. It is a way to sterilize food through to high heat process about 24 seconds at 135-140 degrees Celsius which the spores of milk is destroyed completely in that temperature. The high temperature pasteurization processes was first discovered in the 1960s by used with the milk know as UHT milk. UHT milk can be stored at room temperature for 6-10 months
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simple distillation. We used 60 ml of Cyclohexane/ Toluene. We began with the temperature at 50 degrees Celsius. Unfortunately‚ we reached an error when the compounds evaporated too rapidly. The compounds evaporated so quickly that we lost data from 2 ml to 13 ml. The heat was lowered and as a result we started to see a constant rate. From 14 ml to 18 ml it stayed at the rate of 90 degrees Celsius‚ from 19ml to 25 ml it was at 93 from 26ml to 38ml it stayed in the 90’s for several minutes. When it
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displayed on graphs. Then the optimum pH and temperatures were to be calculated based on the findings. The hypothesis was disproved due to the optimum pH of 5 but the other findings supported the hypothesis of the optimal temperature being 45 degrees Celsius. Materials In biology lab we conducted an experiment in order to understand the effects of temperature and ph on enzyme activity. For this experiment you will need a spectrophotometer‚ a timer‚ starch solution‚ Erlenmeyer flasks‚ beakers‚ graduated
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that this continues to be a myth; research doe not support this. This latest study‚ published in the Proceedings of the National Academy of Sciences‚ researchers showed that cells kept at 37 degrees Celsius were more likely to undergo apoptosis (basically‚ cell suicide) than cells kept at 33 degrees Celsius; apoptosis is a way that we protect ourselves from infection. If the infected cells kill themselves‚ then there are fewer chances for replication of the viruses that infect them. Many people argue
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Thermodynamics Lab Introduction: Thermodynamics is the study of energy which can exist in many forms‚ such as heat‚ light‚ chemical energy‚ and electrical energy. The variables that thermodynamics can be used to define include temperature‚ internal energy‚ entropy‚ and pressure. Temperature‚ relating to thermodynamics‚ is the measure of kinetic energy in the particles of a substance. Light is usually linked to absorbance and emission in thermodynamics while pressure‚ linked with volume‚ can do
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02 December 2012 1. Title and Author 1. The Effect of Extreme Temperatures on the Rate of Photosynthesis 2. Jeffrey Xia 2. Abstract A previous lab in which we conducted‚ tested whether or not the light intensity had an effect on the rate of photosynthesis. We concluded that light intensity did possess an effect on the rate of photosynthesis – the closer the experimental plant units were to the light source‚ the more experimental plant units exhibited the effect of gas exchange in photosynthesis
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