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 and place
Premium
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
Premium
Triphosphate (ATP)‚ which gives them the energy they need to perform. In this experiment‚ creatine is added to water 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
Premium Heart rate Time
Caffeine effect on Daphnia’s heart rate Prepared for: Androniki Kloni By: Maria Mitsi October 6‚ 2013 Abstract Caffeine is a bitter‚ white crystalline xanthine alkaloid and a stimulant drug. Caffeine is found in varying quantities in the seeds‚ leaves‚ and fruit of some plants‚ where it acts as a natural pesticide that paralyzes and kills certain insects feeding on the plants‚ as well as enhancing the reward memory of pollinators. An experiment was held‚ on an aquatic
Premium Caffeine Heart rate
Effects of Alcohol‚ Caffeine‚ and Temperature on the Heart Rate of Daphnia magna Joseph Ezra Gallo BY124L MW 8:30-11:30 Introduction Ectothermic animals are animals whose body temperature is affected by their surroundings. This means that if the environment is cold the animal will be cold. If the environment is warm the animal will be warm. This is because the animal doesn’t have the capability of regulating its body systems to keep a constant body temperature. When an ectothermic animal is
Premium Temperature Celsius Heart rate
Drugs on the Heart Rate of Daphnia magna Introduction The Daphnia magna‚ more commonly known as water flea‚ is indigenous to ponds and lakes in northern and western North America. This crustacean has an outer transparent covering called the carapace. The unique physiology of the water flea is useful in translational research allowing researchers to visibly study all of the bodily systems without causing harm to the specimen (2). Being classified as an indicator species‚ the Daphnia magna are
Premium Caffeine Hypertension Diabetes mellitus
human’s heart rate to speed up‚ decrease‚ or stay the same‚ the volume of sound has a high effect on the heart. However‚ if people will let down the volume of sound‚ others would not be mannered by the increase in volume managing to the deadly heart attack. Sound within the community‚ for instance‚ traffic can cause a human’s heart rate of increase. Problem of heartbeat tends to be solved by seeing what kind of sound causes the increase of heart rates to place a termination to increase of heart rate
Premium Heart rate Cardiology Hypertension
Investigative Quest The purpose of this experiment was to find out how music affects the female human heart rate. Hypothesis My hypothesis is that female resting heart rate will increase as the music tempo increases. If the tempo is slower the heart rate will stay at resting heart rate or decrease. Variables The variables used in this experiment were: • The tempo of the music. • The subject’s heart rate. • The subject’s age. Controls The controls used in this experiment were: • How long the
Premium Psychology Experiment Scientific method
Introduction The heart is an extremely important organ in the human body‚ and it must be able to adjust the heart rate for when a person is resting or for when a person is running. Heart rate is defined as the number of heartbeats per unit of time‚ usually per minute (Medicine-Net). The heart rate is based on the number of contractions of the ventricles. The pulse is defined as a bulge of an artery from waves of blood that course through the blood vessels each time the heart beats (Medicine-Net)
Premium Heart Blood Cardiology
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
Premium Heart rate Heart Blood