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 WebDaphnia Magna Heart Rate in Caffeine Solution

Daphnia Caffeine and Heart Rate Lab - Studocu

WebDec 16, 2015 · 8. Use a pipette to transfer some caffeine solution of about 0.1% to the slide 9. Then get a new Daphnia and place it in to the caffeine solution 10. Measure the heart rate of the Daphnia per 30 seconds following the same procedure as before 11. Repeat steps 7-10 but using caffeine solutions of 0.2%, 0.3%, 0.4% and 0.5% Ethical Issues is merino wool better than fleece

Effect of Caffeine on Daphnia Heart Rate - Snab Biology

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 … WebResults As can be seen from the graph, the mean heart rate of the Daphnia increases up to 0.4% concentration of caffeine (with a mean heart rate of approximately 297.5 beats per minute), from 0.4% to 0.5% concentration of caffeine the mean heart rate remains constant at approximately 297.5 beats per minute. Discussion The results in the graph ... WebWe investigated the effect of caffeine concentration on the heart rate of Daphnia magna . D. magna are an ideal species for examining heart rate because their myogenic heart causes it to perform similarly to humans. We conducted 3 trials, each trial comparing two different concentrations of caffeine on the change in daphnia heart rate. is merino wool fuzzy