show the difference in heart rates before and during intense exercise. Aim: The aim of the investigation was to discover how the heart rate varied with the intensity of exercise. The heart rate is a term describing the regularity of the cardiac cycle. The heart rate is the amount of times it contracts (beats) in a unit of time‚ nearly always per minute. At rest the adult female’s heart rate regulates 75 bpm (beats per minute) but this varies between people. If the heart rate is measured before‚ during
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1-1 EXPERIMENT 1 ISOLATION OF CAFFEINE FROM TEA In this experiment you will isolate caffeine from tea leaves and prepare the salicylate derivative. Introduction This experiment illustrates the isolation of a naturally occurring product from plant material -- caffeine from tea leaves. The experiment will provide experience in handling relatively small amounts of material and at the same time you will be exposed to several techniques and procedures which are fundamental for survival in an organic
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stream is getting pumped with salty potassium filled water that can kill daphnia‚ habitants of the stream‚ if the concentration gets too high. To prevent this a real-time assay can be performed. This is a short timed test that we use to measure the effect of pollutant on organism by finding the smallest concentration possible that could still be a bother. This is a valuable tool because we can get direct results from a living organism by detecting stress signals all in a short period of time allowing
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Liquid Skill: B - Leaf Variation - Conch Skill: C - Heart Rate - Height Variation Skill: D -Energy in food -Toxic response of invertebrates (woodlice) Skill A Title: Assembling & using the Bunsen Burner Aim: To assemble & use the Bunsen Burner Apparatus: * Bunsen Burner * Spark Lighter * Tripod Stand * Wire Gauze * Gas Hose * Thermometer (Celsius) * 250 ml beaker Method: 1. Identify all of the apparatus needed for the burner. 2.
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1. The heart rate determines the intensity of the fitness activity. a. 12*6=72 b. 220-21=199 c. 129-150 range. 2. Aerobic metabolism‚ uses fats‚ proteins and carbohydrates that are oxidized and turned into carbon dioxide and water. Anaerobic metabolism‚ uses only carbohydrates and enters the fluid‚ or cytoplasm‚ of the cell and is turned into lactic acid. Aerobic exercises are running‚ biking‚ and swimming‚ whereas anaerobic exercises are sprinting‚ jumping‚ weight training. 3. My activity is considered
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Effect of caffeine on Daphnia (Water fleas) Introduction- In this study I am going to investigate the effect of caffeine on Daphnia (water fleas) heart rate. I shall use daphnia as they would never have been exposed to caffeine before‚ unlike a human‚ who may have already developed a high tolerance to it. Another reason is that Daphnia have a very translucent body; therefore‚ it is relatively easy to see their heart under a microscope‚ which makes it easier to count the number of heartbeats
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Marcela Levayova Social Psychology February 09‚ 2015 Heuristics In a video called Attitudes and Attitude Change‚ professor Mahzarin Banaji talks about implicit attitudes and how it is an unconscious decision maker that works for us when we make decisions. Implicit attitudes rest in our minds‚ they are our likes and preferences just like any other attitude. It is not conscious and we might not be aware of it therefore it can’t be controlled either. Heuristics are believed to be also unconsciously
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and its effects on Daphnia is tested. By observing the heart rate‚ one can determine if the creatine increases or decreases heart rate. Heart rate was chosen to be measured because one can then see how creatine affects the heart. If it is unhealthy for the Daphnia‚ it could potentially be unhealthy for humans. “Long-term safety of creatine supplementation has been questioned. This retrospective study was performed to examine markers related to health‚ the incidence of reported side effects and the
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What happened to the R-R interval and heart rate after exercise? After exercise the R-R interval increased steadily from 0.48 to 0.68 seconds‚ while the heart rate BPM decreased steadily from 123 to 76; both trending back towards the resting values. What happened to the T-P interval during exercise? Outline what this means for ventricular filling time. During exercise there was a significant drop in the T-P interval which then steadily increased when exercise was completed. The T-P interval represents
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Effect of Chemicals on Daphnia Heart Rate Background: In the world today‚ there are many chemicals that people use to fix or help with issues within their own bodies. Some of these chemicals may include things like caffeine‚ nicotine‚ and alcohol. These supplements can have substantial effects on other things within the body like the brain‚ liver‚ and especially the heart. For example‚ many chemicals like caffeine‚ nicotine‚ aspirin‚ and sleep aid all have effects on the body which can cause your
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