WebThe Effects of Caffeine on the Heart Rate of Daphnia This lab was designed to show how caffeine affected the heart rate of daphnia after exposing them to different concentrations of caffeine for ten minutes.Caffeine is a stimulant‚ which‚ in humans‚ causes heart rates and blood pressure to increase. Its effects range from mild alertness to heightened anxiety … The goal of this project is to test whether caffeine has an effect on heart rate, using the freshwater crustacean, Daphnia magna, as an experimental model system. See more Daphnia magna (common name "water fleas") are tiny freshwater crustaceans. They are filter feeders, and can survive in culture by eating algae, bacteria, or … See more These items can be purchased from Carolina Biological Supply Company, a Science Buddies Approved Supplier: 1. Daphnia magna culture kit. Alternatively, … See more
The Effect of Alcohol and Caffeine Concentrations on
WebIf caffeine is the toxic substance, then the Daphnia exposed to decaffeinated coffee should be unaffected. The groups studying alcohol or nicotine could compare tests of alcoholic … WebCaffeine is a stimulant, which, in humans, causes heart rates and blood pressure to increase. Its effects range from mild alertness to heightened anxiety and body tension. … paying rent with credit card to build credit
Why are Daphnia used in heart rate experiments? [Answered!]
WebDec 7, 2024 · It can also be observed that the resting heart rate of this Daphnia was considerable lower than that of the Daphnia used in the temperature experiments. (Table 2) Table #3: Effect of Caffeine Solution on Heart Rate of Daphnia magna I 16 4% 6 I O (dead) The zero heart rate was lower than the heart rate at the highest level of alcohol … Web2) The size of the daphnia - larger ones have a smaller surface area to volume ratio and which decreases the caffeine uptake. 3) Age of Daphnia - Older ones are more likely to have a higher heart rate. 4)Gender of the Daphnia - I'm not 100% sure about this but i'm pretty certain that males are likely to have a higher heart rate than females. WebMethod 1. Take a small piece of cotton wool, tease it out and place it in the middle of the glass slide. Set up the microscope... 2. Select a large daphnia and use the pipette to … paying restitution