Aim:The aim of this practical is to investigate the effect of exercise on heart rate and breathing rate. We will use a digital heart rate monitor strapped on our chest while we perform different levels of exercise. A digital watch is also provided which receives signals from the heart rate monitor and displays your current heart rate on the screen. To measure the breathing rate at different levels of exercise‚ we measure the breathing rate before physical activity by counting the number of breaths
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Alcohol and its Effects Rachael Wade Ivy Tech Community College Alcohol and its Effects Alcohol can be a very harmful substance. Alcohol can be abused‚ and people can get addicted to it like any other drug. It can impair coordination and judgment as well as a lot of other things. Alcohol can also have long term effects on the organs in the body. It can affect people psychologically as well as behaviorally. Many deaths that occur each day are caused by alcohol. Consuming alcohol affects a
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Billions of people all over the world consume caffeine‚ mainly in cups of coffee. Many of these same people consume caffeine on a daily basis. Is this constant consumption of caffeine hazardous to one’s health or is it positive to one’s health? These questions have been partially answered by many and are in the process of being fully answered by some. However‚ not all of these answers can be deemed as credible. There are a lot of misleading articles‚ web pages‚ and blogs that share their opinion
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Homeostasis of BP and Heart Rate A normal blood pressure can be identified by having a systolic pressure of around 120 and a diastolic pressure of around 80. This value is expressed as "120/80". A normal heart rate is expressed as the amount of times it beats in a minute; a normal adult heart rate is between 60-100 beats per minute (BPM). There is a relation between these two measurements‚ but they are stimulated by several different circumstances. The blood pressure is mainly affected
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this experiment I aim to find out if caffeine has an effect on the heart rate of daphnia. Daphnia are water fleas that have a sort of heart that we can see in magnification. We can count the number of heart beats in a minute of a regular daphnia and try and get a new one with the same specifications as the old one that may have died. It is also a good idea to get a new one as we want to see how much it affects it from ordinary instead of adding the caffeine one after another. We have to be careful
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The effects toxins such as caffeine‚ nicotine‚ epinephrine‚ ethanol and salt have on the Daphnia magna’s heart rate Results The effect the various drugs caffeine‚ nicotine and epinephrine had on the Daphnia magna is displayed in Figure 1. After three sample trials were taken there was an average of 180 beats/min-1 ± 6.928 taken under normal conditions. The addition of caffeine caused an increase in the average heartbeat to change to 192 beats/min-1 ± 9.165 in the Daphnia magna tested. When testing
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Effect of Caffeine on Daphnia Heart Rate: Aim: To investigate the effect of caffeine on the heart rate in Daphnia. Hypothesis: My hypothesis is that as the caffeine content increases‚ the heart rate if the Daphnia increases. Equipment: * Culture of water flea – Daphnia * Caffeine of 5 different concentrations * Microscope * Counter * Cavity Slide * Pipettes * Stop clock * Distilled water * Test tubes * Petri dish Method: 1. Remove one Daphnia
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Caffeine and the Placebo Effect Plants produce caffeine as a protective pesticide‚ paralyzing feeding insects. This powerful substance has been used as a stimulant for centuries. The use of caffeine as an energy booster dates back to the Stone Age through coffee‚ tea and cocoa. Synonymous with caffeine‚ coffee has grown into a $70 billion industry with no signs of slowing down. It’s a good source of antioxidants‚ a social atmosphere‚ and a legal stimulant. Coffee drinkers come back for more because
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Daphnia‚ also known as the water flea are planktonic crustaceans that are found in lakes‚ ponds‚ and streams. They received “their common name from their jerky movement through the water” (Clare). They are also “very small‚ usually 2-5mm long‚ with an overall shape similar to a kidney bean” (Elenbaas). Daphnia play an important role in the freshwater food chains and serve as food for other freshwater organisms such as fish. They are also commonly used to test for chemical toxicity in water. Since
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Alcohol and Driving Alcohol is a depressant that affects your vision‚ coordination‚ reaction time‚ multitasking ability‚ judgment‚ and decision-making. How can you drive safely if you can’t see‚ think‚ and move around well and react quickly? Alcohol affects your ability to identify dangerous situations and make good decisions when you know danger is ahead‚ and it slows your reaction time even if you do make a good decision. In addition‚ having alcohol in the body while you’re driving messes up your
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