Typical soft drinks usually contain carbonated water‚ caffeine‚ sodium benzoate‚ flavoring agents‚ and sweeteners as well for the purpose for enhancing flavor‚ and in the case of benzoate‚ to function as a preservative. Caffeine is one of the major components that is found in several beverages like coffee‚ energy drinks‚ tea‚ and soft drinks; just to name a few. Caffeine is known to be a powerful drug‚ which many people become dependent on; when they wake up in the morning it is typical to have a
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Summary Caffeine is a stimulant for the central nervous system which will relax the muscle and increase the gastric acid and heart rate (Kelly‚ 2017). The analyzing of caffeine and caffeine metabolites in saliva is to quantitatively measure the ratio of concentrations of caffeine and metabolites. There are three different metabolites of caffeine and the majority of caffeine metabolite is paraxanthine. The ratio of concentration represents the activity of the first metabolism enzyme of caffeine‚ CYP1A2
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Christian O. Zipagang‚ Lance Harvey O. PROBLEM: How Caffeine affects a Gold-fish Chapter 1: The Problem and Its Background * Background of the Study * Caffeine is becoming a common chemical found in the environment but‚ little research has been done to understand the environmental effects of caffeine‚ including dissolved caffeine in aquatic systems. The goal of this research study was to begin to understand how caffeine may interact with aquatic environment‚ using the bacteria
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Chm235LL 2/18/14 Caffeine Isolation Lab I. Abstract Solid crude caffeine was extracted from tea and purified via sublimation. The melting point was experimentally found at 215.9-218.7oC. II. Introduction Caffeine is the most dangerous substance being used in lab this semester‚ but it’s also one of the most favorite chemicals commonly ingested among college students. The main purpose of this lab was to extract caffeine from a beaker of about 20 ml of tea. Sublimation was an effective and convenient
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This is possible because each substance has a specific absorbance spectrum‚ meaning that the absorption spectrum of two different substances cannot be the same. Purpose/Hypothesis: 1. The purpose of the experiment was to determine the extinction coefficient for a solution of DCPIP. This was done by using the concentration‚ absorbance‚ wavelength values. 2. The purpose of the experiment was to determine the concentration of an unknown DCPIP sample by measuring the absorbance maximum of a specific
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parties‚ sports activities and friends. The result is that young people suffer from stress. There are different ways of dealing with stress. Everyone knows that caffeine‚ whether it is in the form of coffee or soft drinks‚ keeps you awake and alert. But caffeine is a drug which can become addictive. In the end‚ like other drugs. caffeine only leads to more stress. A better way to deal with stress is to exercise: Research has proved that physical exercise is a good release for stress‚ because it increases
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2013 Informative Speech-Caffeine Outline Specific Purpose: To inform my audience about what caffeine is‚ the effects of it‚ and the withdrawal symptoms. Central Idea: Caffeine can be found in many places and comes in many forms. It can major effects on our body and we can experience major withdrawal symptoms. Introduction I. What does coffee‚ tea‚ soft drinks‚ chocolate‚ and a bottle of medications have in common? II. They all contain caffeine‚ and that’s what I’m going
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concentration of caffeine bulbs B‚ C‚ and D were in: 0.1%‚ 0.3%‚ and 0.5%. Four test tubes were gathered to set up the experiment‚ each holding an onion bulb. After each day‚ every individual bulb’s roots were counted and the average length was recorded. After recording this information for six days‚ an onion root tip from each bulb was taken and squashed under a coverslip. These root tips were then looked at under a microscope.
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EFFECT OF CAFFEINE ON HEART RATE LECTURER : MDM ZAKIAH BINTI ZAKARIA TITLE The effect of caffeine on heart rate OBJECTIVE To determine the effect of caffeine on heart rate of daphnia INTRODUCTION Caffeine‚ medically known as trimethylzanthine. Its chemical formula is C8H10N4O2. When in pure form‚ caffeine is a white crystalline powder that taste very bitter. 1The most common way of acquiring pure caffeine is the process of decaffeinating coffee and tea. Caffeine is found
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zero is squared then‚ it will still be zero. The Pearson r correlation coefficient is used with _____ level data. Pearson r coefficients can range from ______ to ______. (2 points) Interval/ratio level data. 0.00-+/-1.00 A researcher is investigating the effects of anxiety on creativity. Individuals with varying levels of anxiety are asked to complete a measure of creativity. The results show a classic U-shaped distribution; that is‚ individuals with moderate levels of anxiety score the highest
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