The goal of this experiment was to explore how temperature would influence the rate of cellular respiration of beans. It was hypothesized that as the temperature of the beans increased‚ the rate of cellular respiration would increase as well. In this experiment‚ the independent variable was the temperature‚ which gradually increased as time went by‚ and the dependent variable was the rate of cellular respiration‚ which was shown by the change in the amount of CO2 and O2 in the container. During the
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The effect of increasing substrate concentration on rate of an enzyme reaction. Enzymes are biological catalysts that lower a reactions activation energy making possible many of the reactions needed for life to exist. Enzymes have a high specificity which have been explained by many theories such as Fischer’s lock and key. Currently the most widely accepted theory is the induced fit hypothesis proposed by Koshland in 1958. This hypothesis solves some of the problems with the Lock and key theory
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Ammonia and Hydrochloric Acid Lab Chemistry 1 Abstract The straw should be cut shorter to 8 cm in order to make the solid ring appear in the center of the straw. We achieved our goal‚ cutting the straw caused the gases to not have to go as far‚ and meet in the middle. Background The particles in a gas are very loose and tend to move around a lot very quickly. The particles in a solid are very compact and vibrate but don’t really move very much. The particles in a liquid however are more
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chemical to clean your floors and start to notice that it is eating away your floors. If you have this expensive type of floor in your home your best bet is to learn how to clean marble floors properly. Marble is a soft‚ porous natural stone and taking special care of this type of stone can be challenging but if the marble is taken care of properly it will make any room elegant. Tip One Sweeping often is sometimes a little daunting‚ but will help out your floors so much. It is recommended that you
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METHODOLOGY After formulating the hypothesis that the molecular weight affects the rate of diffusion‚ three different kinds of substances --potassium permanganate (KMNO4)‚ potassium dichromate (K2Cr2O7) and methylene blue (C16H18N3SCl)‚ were used to test the validity of the hypothesis. Potassium permanganate is an inorganic chemical compound which is in violet liquid form; potassium dichromate is an orange inorganic chemical reagent and methylene blue is a chemical compound commonly used for staining
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The affect of psychological stress on the heart rate. Introduction: The human body is incredible machinery that can adjust to stressful situations and react in a “fight-or flight” manner by temporarily shutting off nonessential‚ at the moment‚ immune and digestive systems. When the body is ready for a challenge‚ heart rate increases‚ blood pressure rises and glucose production intensifies to supply large amounts of energy. These metabolic changes are caused by release of stress hormones (catecholamine
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training‚ additional resources‚ and the use of consultants if necessary. Develop the project in modular form so users can test and approve the functional elements as you go along. Test every aspect of the site exhaustively. In this case we have Tony’s chips website already running‚ it is essential to gather the existing functional requirements. System analyst while gathering requirements can interview people from the old company‚ production support‚ gather system documentation and using FACT finding techniques
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Johanie Jean-Louis 11/11/2013 Business Logistics and Transportation RUID- 144002630 Case 9 Happy Chips 1. The difference between activity based costing and segment portability analysis is that activity-based cost is a method for improving the accuracy of cost determination. To develop a system like this one needs to understand the relationship among resources‚ activities‚ products and services resources are spent on activities‚ products and services are a result of activities. Activity
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The purpose of the experiment was to perform an electrophilic addition reaction by the bromination of cinnamic acid. The product of this reaction is 3-Phenyl-2‚3-dibromo propionic acid‚ which is purified by recrystallization. Cinnamic acid (3-phenylprop-2-enoic acid) is an unsaturated carboxylic acid. The electron rich π cloud (see Figure 1) in the double bond of this structure is nucleophilic and can be considered a Lewis base. It can therefore be saturated by the addition of a halogen to the double
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used to solve problems that involve groups where each group has the same number of objects. For example: Joe has 5 friends‚ and each of his friends has 5 marbles. How many marbles does Joe’s friends have? To solve this problem‚ you can draw it out as 5 different groups and each group has five marbles each. Answer: Joe’s friends have 25 marbles all together. -Number lines can be used to solve multiplication problems by skip hopping to the number you are multiplying and then the number of hops
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