WebJan 7, 2024 · Our hypothesis is alcohol causes a decrease in heart rate, whereas caffeine causes an accelerated heart rate, predicting that the more caffeine we give the daphnia the faster it heartbeat rate will become and the heartbeat rate will decrease as we give the Daphnia alcohol. WebDaphnia is poikilothermic, which means that its body temperature and therefore its metabolic rate are affected directly by the temperature of the environment. The change in …
Chapter 2 Introduction to Daphnia Biology - NCBI …
WebIt is predicted that a higher concentration of caffeine the daphnia are subjected to will increase the heart rate more than compared to a solution of a lower caffeine … Web6 rows · Though humans and Daphnia Magna are different organisms, alcohol and caffeine should have an ... openwhy.cn
🌱 The effect of caffeine on daphnia. Biology Core Practical 1: Effect ...
WebHypothesis: If the concentration of caffeine increases then the daphnia’s heart rate will also increase. Controls: Positive- Even a little amount of caffeine will always increase the heart rate of a daphnia. Negative- the daphnia is always going to give an unknown result. Materials: Pipette Beaker Test tubes Test tube rack http://www.markedbyteachers.com/gcse/science/effect-of-caffeine-on-heart-rate-in-daphnia.html#:~:text=Effect%20of%20Caffeine%20on%20Heart%20Rate%20in%20Daphnia.,be%20taken%20into%20consideration%20when%20doing%20the%20experiment. WebDaphnia Lab Report. The effect the various drugs caffeine, nicotine and epinephrine had on the Daphnia magna is displayed in Figure 1. After three sample trials were taken there was an average of 180 beats/min-1 ± 6.928 taken under normal conditions. The addition of caffeine caused an increase in the average heartbeat to change to 192 beats ... ipef strategy