Another possible explanation was that the Daphnia was too weak from the beginning. LaFave, b The alcohol affected Daphnia as expected. Both teams obtained a plastic pipette and cut off the tip at the first graduation from the bottom to allow Daphnia magna to fit into the pipette. Investigating the effect of coffee on the heart rate of daphnia Aim: When finished the Daphnia was placed into a new beaker of water. If too much alcohol is added, it will result in the death of the animal.
Its body is transparent. Literature Review Dissertation chapter: After a minute another zero reading was taken. Table 2 Table 3: First a zero reading was taken before any chemicals were introduced. The caffeine will have no effect on the organism, because it will be insufficient to overcome the effects of the alcohol exposure. When a ten percent solution was added the heart stopped.
It will be directly proportional to each other, meaning that the increase of the concentration of the caffeine will give an increase of the heartbeat. As higher concentrations of haert solution were introduced, there was no effect on this Daphnia.
Any excess petroleum jelly was wiped off so that there was only one layer on the well.
The following was the procedure used by the temperature team. Investigating the effect of coffee on the heart rate of daphnia Aim: Another application is in biological research when samples need to be kept alive, sedated for viewing, or revived.
Also, it will cause the blood vessels to constrict. This can be explained several ways. These things have an obvious practical application in the medical field. We can observe the heaet of the Daphnia eesay be dorsal to the backbone, just behind the head. It could be argued by animal rights or religious views that experimenting on any kind of living is wrong as they also probably feel pain, although they may not suffer in the same way as higher animals they should be correctly returned to their natural habitat after observation.
Hi there, would you like to get such a paper? Table 2 Table 3: It will work by causing the nervous system to work faster.
The Effect of Caffeine on Daphnia Heart Rate
A heart rate reading was taken for each temperature. The effect of coffee on the heart rate of daphnia Essay Essay Topic: Daphnia magna was unable to recover from the high alcohol concentrations. The hypothesis is that the heart rate of Daphnia magna will increase as higher concentrations of caffeine solution are introduced to the system. It is used as a stimulant to human the central nervous system by increasing the stimulatory of the neurotransmitters, however high levels of caffeine to the body can cause effects of insomnia, stress, anxiety, weight loos or high blood pressure.
Lab Report Daphnia | Free Essays –
How about receiving a customized one? The Daphnia was placed onto the microscope with a low lighting.
In this experiment we will intoxicate an organism. Now fill the petri dish with a caffeine solution.
The effect of coffee on the heart rate of daphnia Essay
This table showed no trend. The caffeine will have no effect on the organism, because it will be insufficient to overcome the effects of the alcohol exposure. Get custom essay sample written according to your requirements Urgent 3h delivery guaranteed Order Now.
A limited time offer! Both teams obtained a plastic pipette and cut off the tip at the first graduation from the bottom to allow Daphnia magna to fit into the pipette.
After the last alcohol solution a Kimwipe was used to draw off all of the solution and a drop of Daphnia culture fluid was added. Your Answer is very helpful for Us Thank you a lot!