Daphnia Heart Rate Experiment Essay - 1570 Words

Experiment Report for: ‘the affect of Caffeine on Daphnia’s heartbeat’ Introduction: Aim: The aim of this experiment is to understand the affect of the drug Caffeine on the rate of a Daphnia’s heartbeat. This is to understand the affect of caffeine on a human’s heart rate and the use of daphnia keeps the experiment fair and safe. Background Research: Daphnia – Daphnia (water fleas) are grouped as crustaceans under the arthropod group of Kingdom Anamalia. They have an open circulatory system where fluid (there is no distinction between blood and nutritional fluid) in the hemocoel delivers oxygen and nutrients to the organs/ cells directly meaning caffeine enters their system much faster than it would in humans. This type of†¦show more content†¦Once finished with the | | | |daphnia put it in to the seperate tank of | | | |pond water so it is not reused. | |By ingesting bacterium or viruses from the |The person that ingested the bacteria could |Wash hands after investigation to remove | |pond water. |contract an infection. |bacteria from hands that touch the mouth | | | |regularly. | |If handled roughly the daphnia could get |The heart rate would be affected by the |Handle it carefully e.g use a pipette not | |injured. |injury which could affect the results of the |fingers which could squash the daphnia. | | |experiment. | | |The daphnia could get caught in the pipette. |It would cause stress to the daphnia which |Use a pipette that has been adjusted so it | | |could raise its heart rate and affect the |has a large hole that the daphnia would not |Show MoreRelatedDaphnia Experiment Report1504 Words   |  7 PagesDaphnia Experiment Report 1. Introduction Caffeine is found in many plant species, where it acts as a natural pesticide. It is found most commonly in cocoa, tea and coffee, but is also artificially added to some soft drinks such as cola to act as a flavour enhancer. When consumed by humans, caffeine works as a stimulant causing amounts of released neurotransmitters to be increased. High use of caffeine has been related with raised blood pressure, restlessness, insomnia and anxiety which, inRead MoreEffects Of The Heart Rate From Caffeine And Ethanol1137 Words   |  5 Pagesmathematically through a series of experiments. Examples of metabolism are differences of the heart rate from caffeine and ethanol. By understanding the topic, it can be proven that these drugs affect organisms in a certain way, such as the heart rate. The information, collected following the experiment, can be inferred in recognizing the way our body responds to chemicals when drinking coffees and colas. The experiment was conducted by inducing the spec ies Daphnia magna to both caffeine and ethanolRead MoreThe Effect Of Caffeine On The Heart Rate Of Daphnia1114 Words   |  5 Pagespurpose of this experiment was to see if caffeine had an effect on the heart rate of Daphnia (water fleas) by observing them under the microscope and recording their heart rate over a period of time in concentrations of caffeine. Caffeine, which is a stimulant drug rttused in coffee, tea, Red Bull and Pro-plus, causes increased amounts of stimulatory neurotransmitters to be released. As caffeine is a stimulant, a prediction was made that caffeine would increase the heart rate of the Daphnia. Method ToRead MoreThe Effect Of Temperature On Daphnia By Changing Ph Levels And Measuring The Hear Rate1419 Words   |  6 Pages This experiment is being done to show the effect oh pH levels on daphnia by changing pH levels and measuring the hear rate. Introduction Daphnia magna are commonly used to test water toxicity, they are a vital part of fresh water ecosystems. They serve as a crucial role in food webs as they are a food source for smaller fish and invertebrates, and they also are a consumer of algae and bacteria (Elbert, 2005). They range from 2-5mm long these small crustaceans are also referred to as water fleasRead MoreThe Effect Of Ph Levels On Daphnia1377 Words   |  6 Pages This experiment is being performed to show the effect of pH levels on daphnia by changing pH levels and measuring the heart rate. Introduction Daphnia are used to test water toxicity, they are a vital part of fresh water ecosystems. They are a food source for smaller fish and invertebrates and considered to be a consumer of algae and bacteria (Elbert, 2005). These small crustaceans range in size from 2-5mm long and are commonly referred to as water fleas. Daphnia belong to the group calledRead MoreThe Effect of Caffeine on the Heart Rate of Daphnia968 Words   |  4 PagesAs the caffeine concentration rises, so does the mean heart rate of daphnia. Risk Assessment: In this experiment there are the following risks both for the human that carries out the experiment and the daphnia: ↠ The human that carries out the experiment should be cautious not to touch the lamp with wet hands since it uses electricity. ↠ Also, be careful not to spill any of the pond water on the floor. ↠ As for the daphnia, there is a chance for them to die as when they are exposedRead MoreIs Plant Defensive Compounds Used?1510 Words   |  7 Pagescause cardiac arrest to those herbivore attackers or animals that consume the plant. If this statement is compared to the experiment performed, the defensive compound used, the milkweed should increase the heart rate of the invertebrate observed (the Daphnia) or create at least a change in the insect. During the experiment, water was compared to the milkweed and the heart rate changes were observed under microscope looking at different magnifications. Looking at the data and results obtained, it wasRead MoreHow Does Caffeine And Nicotine Affect Daphnia Magna?863 Words   |  4 PagesHow Does Caffeine and Nicotine Affect Daphnia magna Introduction: The experiment conducted primarily focused on the heart of the Daphnia magna and how it is affected by caffeine and nicotine. The organism is transparent this key feature is ideal for a model organism. During the experiment a total number of four organisms were treated with caffeine and nicotine. Caffeine is a stimulant of the nervous system. (Caffeine. 2015) Caffeine is present in highly consumed products such as coffee, tea, chocolateRead MoreThe Effect of Caffiene on Heart Rate1658 Words   |  7 PagesTITLE: Effect of the caffeine on the heart rate OBJECTIVE: To investigate the effect of the caffeine on the heart rate of living organisms. INTRODUCTION: * Daphnia Daphnia  are small,  planktonic  crustaceans, between 0.2 and 5  mm in length.  Daphnia  are members of the  order  Cladocera, and are one of the several small aquatic crustaceans commonly called  water fleas  because of their  saltatory  swimming style (although  fleas  are  insects  and thus only very distantly related). TheyRead MoreThe Effects Of Alcohol On The Heart Rate Of Daphnia Magna1341 Words   |  6 PagesThis report presents the physiological changes in the heart rate of a fresh water crustacean Daphnia magna when exposed to caffeine and alcohol. Different Daphnia magnas were placed in a depression slide containing fresh water and later exposed to solutions of caffeine and alcohol. Each Daphnia magna had different responses. These data suggest there is an increase in heart rate when a Daphnia magna is exposed to caffeine and a decrease in heart rate when it is in a solution of alcohol. LAB REPORT