Measuring the effect of the concentration of caffeine on heartbeats. Caffeine is a stimulant which increases cardiac arrhythmia (improper heart rate) by increasing stress hormone (e.g. adrenaline) secretions. It also increases blood pressure which contributes to the blockage of receptors such as adenosine A1 and A2 receptors. The caffeine blocking receptors also blocks vasodilatory function‚ in which blood vessels become less dilated. Hence wise‚ caffeine is also known as a mild stimulant of the
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Effects of alcohol on brain functioning and neurotransmitters The consumption of alcohol can cause an effect on several parts of the brain including the hypothalamus‚ pituitary gland‚ medulla and the limbic system (How alcohol works 2008). Each sector responds differently to alcohol‚ causing changes in specific behaviors. Cerebral cortex The role of the cerebral cortex is to decipher information received from the senses‚ processing thought‚ speech‚ and memory and indicating the majority of
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What is alcohol? To most people “alcohol refers to the intoxicating ingredient in most beer‚ wine‚ liquor”. When people think of dangerous drugs‚ they probably think of heroin‚ crack cocaine‚ crystal meth or prescription painkillers. Because it is legal‚ alcohol is not‚ in most cases thought of as a substance with the ability to kill you or lead to chronic‚ irreversible health problems. It can wreak havoc with your health; destroy your family‚ your career‚ your hopes and dreams. Worst of all‚ it
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Cell Phones Are Here To Stay Today cell phones have become like an accessory that accents our wardrobes. Cell phones are used for far more than just phone calls anymore. Some may even argue that they have become a distraction‚ a nuisance‚ or annoying even. At the end of the day‚ most of the people that would make this claim prove to be hypocrites and own a personal cell phone their own. Almost anything needed is virtually at fingertips. This one device has brought communication to your fingertips
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Marlyn Perez Reflection Paper - Alcohol/Drugs Drug and alcohol use on college campuses is universal. Students articulate many reasons why they do it‚ but most neglect to consider both the long-term consequences of their actions. How wide-spread is drug and alcohol abuse? Teenagers today admit to extensive experimentation. According to one study‚ 90 percent of teens said that they have used alcohol‚ over 50 percent have used marijuana‚ 17 percent have used cocaine and 13 percent have used
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investigate the effects of the increase in the enzyme concentration on the rate of reaction. By using self investigative and experimental skills‚ the experiment was done in order to determine how the rate of reaction will be altered‚ whether it will increase‚ decrease or remain constant when the different concentration of enzymes added. INTRODUCTION: Enzymes are produced naturally in plant‚ animal‚ and microbial cell. There are thousands of different enzyme can be found in any cell. Enzymes can
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________________________________________ Absorption Alcohol is absorbed from all parts of the gastrointestinal tract largely by simple diffusion into the blood. However the small intestine is by far the most efficient region of the gastrointestinal tract for alcohol absorption because of its very large surface area. In a fasting individual‚ it is generally agreed that 10% to 20% of a dose of alcohol is absorbed from the stomach (the volume of alcohol affects the absorption) and 75% to 80% is absorbed
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The Semipermeability of Cell Membrane to Different Osmotic Environments Using Dialyzing Bag Model1 Sittie Johaynnah M. Sambarani Group 3 Sec. I-1L December 17‚ 2012 ------------------------------------------------- ------------------------------------------------- ------------------------------------------------- ------------------------------------------------- 1 A scientific paper in partial fulfillment of the requirements in Biology 10 Laboratory under Professor Junaldo
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Could one imagine managing life without a cell phone? Today‚ communication is available anywhere at any time in the United State. Using a cell phone is now the normal way of life. Many Americans have done away with a home phone and begun to use the cell phone as a basic source of communication. Cell phones have affected this country by providing convenient communication and saving lives. The cell phone has made communication convenient by doing away with the confinement of a corded home phone.
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Abstract The following experiment details the effect of different concentrations of catalase on the production of oxygen and water through the breakdown of Hydrogen Peroxide. In this experiment paper disc where coated in varying concentrations of catalase‚ 0‚ 25‚ 50 75 and 100%. The time taken for the disc to float between two markers on the side of a glass was then recorded. This experiment demonstrates that the higher the concentration of enzyme used the greater the production of oxygen on the
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