Introduction The aim of this experiment was to determine the effect of caffeine on resting body temperature. This has to do with homeostasis‚ which is the maintenance of equilibrium. In other words‚ it is a stable body state. Homeostasis refers to the process of keeping the internal body environment in a steady state‚ when the external environment is changed (Homeostasis 2). Humans are warm-blooded creatures that generate body heat internally and maintain body temperatures at a fairly constant level
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------------------------------------------------- Isolation of Caffeine from Coffee Date of laboratory work: 10/9/2012 5:00-7:45 Date of report written: 10/15/2012 Introduction: The purpose is to isolate caffeine from coffee by using the organic solvent dichloromethane (CH2Cl2) that is also referred to as direct contact. Calcium carbonate (CaCO3) is used to remove the tannins from the coffee. Afterwards an extraction is used to separate the organic layer (bottom) from
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the diluted concentration of caffeine was put in compared to the control group that contained no concentration of caffeine. The hypothesis was supported because a significant decrease of the total number of cells when caffeine solution was added to the experimental group was clearly shown. An addition of small amounts of caffeine does inhibit cell proliferation and affect cell viability during the lab experimentation one more test was conducted because the first experiment was done with a much more
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Stage 1 Psychology Research Report Affects of caffeine on reaction time Proposal: Caffeine is used by many people to increase their energy levels. It alters an individual’s alertness and their reaction time. Though the most common form of caffeine is coffee‚ it can also be found in certain soft
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The Effects of Temperature‚ Acetylcholine‚ and Adrenaline on the Heart Rate of Daphnia magna Hieu Duong 6 April 2011 Introduction The heart is a muscular organ that constantly pumps blood throughout the human body. The continuous flow of blood creates a system for vital organs within the body to gain oxygen and nutrients. The timely delivery of oxygen to the body’s organs is very crucial. Brain cells‚ for example‚ will die within minutes if the flow of oxygen is obstructed. For the
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Caffeine write up Caffeine is a stimulant Stimulants are a class of drug that boosts‚ alternates and increases your energy levels and they activity of the nervous system. Caffeine is in drinks‚ such as; Coca-Cola‚ tea and coffee‚ these are called caffeinated drinks. Caffeine is not normally recognised as a drug to most. Caffeine has an effect on your heart rate‚ (this is how fact your hear beats) Caffeine is able to change the way your body and mind works Chocolate is known to
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The experiment did not contain any form of reaction mechanism since no chemical identity had been changed. The lab demonstrates the use of chemical molecular behavior to isolate a particular set of molecules. Caffeine had already existed in the leaf itself but needed to be separated from the other chemicals. Caffeine’s chemical structure is relatively similar to the nucleic acid purine in that they use nitrogen and is bicyclic but lacks an alkene‚ amine and an amide. Caffeine has a solubility of
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Effec | Effect of caffeine on plant growth | Description This science fair project was performed to find out the effect on plant growth of adding caffeine to the soil. The experiment was done by using mung bean plants and watering them daily with water‚ water mixed with caffeine and with a coffee mixture. Hypothesis The mung beans watered using the coffee mixture will grow the fastest. Overview Caffeine and plant growth The effect of adding caffeine to the soil and its effect on plant
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Abstract For this experiment we tested the effects of different adrenalin concentrations (0.001%; 0.01%; 0.1%) on the daphnia flea. The daphnia was placed on a slide with cover slip in order to examine its heartbeat by using the microscope. Aim In this Lab we will study the effect of different concentrations of adrenalin on the heart rate daphnia‚ the water flea. It is expected to recognize a threshold of the daphnia in its reaction the three different adrenalin concentrations‚ in terms of heart
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Science Fair Research Paper How Caffeine effects plant growth. I decided to base my project on the effects Caffeine has on plants. I choose three different Basil herb plants and will water them with a little‚ medium and large amounts of Caffeine to determine the effects that Caffeine has on the plants. What is Caffeine??? Caffeine is found in seeds‚ leaves and the fruits of some plants‚ where it acts as a natural pesticide. Humans mostly extract Caffeine from the bean of the coffee plant and
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