Goldschmidt Honors Biology 2° Mrs. Gempel September 3‚ 2015 Daphnia Lab Results Paper Abstract The goal of the study was to observe the effects of multiple chemicals on a Daphnia magna’s heart-rate compared to a control (pond water). The different chemicals were caffeine and alcohol. The heart-rate was the main variable in this experiment. The Daphnia’s heart-rate was observed for 15 seconds and then multiplied by 4 to show its heart-rate in one minute. This was repeated 4 times for each chemical
Premium Heart rate
comparison with decaffeinated coffee causes a slight rise in the mean change in pulse and respiration rate. However‚ the range bars of those that consumed caffeinated coffee and those that consumed decaffeinated coffee in The Mean Change in Pulse Rate graph overlap. Similarly the range bars in The Mean in Change in Respiration Rate graph overlap. This suggests that the mean change in pulse rate of decaffeinated and caffeinated groups are not accurate enough to be used to make a definitive decision
Free Caffeine Coffee Null hypothesis
Every day your heart pumps blood through a vast network of blood vessels around and around your body‚ delivering food and oxygen to cells and removing waste. The pulse (heart rate) is the number of times a person’s heart beats per minute (bpm). The pulse is a rhythmical throbbing of the arteries as blood is propelled through them‚ typically felt in the wrists or neck. Your resting heart rate occurs when you become relaxed or comfortable. These are shown when sitting or lying down. The ability to
Premium Obesity Heart Physical exercise
Nelson Marlborough Institute of Technology Literature Review Caffeine & High-Intensity Power Out-Put Author: 10/16/2013 Diploma in Applied Fitness Exercise Science Table of Contents What are the effects of caffeine on power output during high-intensity performance? 1 Introduction The effect caffeine (CAFF) elicits on sustained endurance performance is well founded (Costill‚ Dalsky‚ & Fink‚ 1978; Graham‚ & Spriet‚ 1991; Trice‚ & Haymes‚ 1995; Erickson‚ Schwarzkoff
Premium Energy Metabolism Caffeine
to introduce my self first. My name is David Cho * Caffeine is used to provide a "boost of energy" or a feeling of being more alert. It’s often used to stay awake longer and many people feel as though they "cannot function" in the morning without a cup of coffee to provide caffeine and the boost it gives them. 9 in 10 Americans consume some form of caffeine regularly‚ making it the most popular behavior-altering drug. * Caffeine is a naturally occurring substance. It is part of a group
Free Caffeine
Title: Caffeine Specific purpose: To inform my audience what exactly caffeine is‚ where it comes from‚ the benefits of caffeine and the negative effects of caffeine. Introduction A. Attention material: Do you ever feel like you will never make it through the day without caffeine? Is your first thought in the morning to get yourself a cup of coffee before you can even get your day started? B. Tie to the audience: I am sure that most of you do consume at least one form of
Premium Caffeine
Caffeine is a drug that is used to improve mental alertness by stimulating the central nervous system [1]. It is an ingredient found in a various amount of products sold on the market today‚ such as coffee‚ tea‚ chocolate‚ soft drinks‚ and energy drinks. Caffeine can be taken by mouth or intravenously (by IV) to help alleviate breathing problems in infants and can even be used in combination with some pain killers to treat migraines after epidural anesthesia. Moreover‚ it can be helpful in preventing
Premium Chromatography High performance liquid chromatography
is among the top preventable risk factors of heart disease amongst many other health problems. Coronary heart disease and strokes are the primary types of cardiovascular disease caused by smoking. They rank as the first and third leading causes of death in the United States. More than 61 million Americans suffer from some form of cardiovascular disease. Smoking increases your risk for high blood pressure‚ coronary heart disease‚ stroke‚ congestive heart failure‚ and aneurysms to name a few. More
Premium Myocardial infarction Atherosclerosis Artery
Caffeine Topic: Caffeine General Purpose: To inform Specific Purpose: At the end of my speech‚ my audience should understand the beneficial effects of caffeine‚ the negative effects and discuss what are considered safe levels of caffeine consumption. Thesis Statement: The three areas I will cover in my speech are the beneficial effects of caffeine‚ the negative effects and discuss what are considered safe levels of caffeine consumption. Introduction Attention-Getter: If you
Free Caffeine Coffee
The popular name for Daphnia is ‘water fleas’ because they resemble fleas in shape and movement. Unlike fleas‚ which are insects‚ Daphnia are crustaceans classified under the scientific order‚ Cladocera. The purpose of this experiment was to examine the alertness of Daphnia ambigua alertness at different temperatures. It involved the incubation of 30 Daphnia ambigua in three 100ml beakers. Exposing each beaker to a different temperature revealed that temperature of the surrounding environment had
Premium Carbon dioxide Climate change Global warming