An Investigation To See The Effect That Alcohol Has Upon The Heart Rate Of Daphnia.
Aim:
In this investigation I am going to see how alcohol affects the heart. Due to the ethical and safety issues involved in using in an investigation such as this I am going to use Daphnia (water flea) to conduct this experiment. Although humans and Daphnia are very different organisms, the affect that alcohol has upon the heart should be similar.
Hypothesis:
The hypothesis I am going to test during the investigation is:
‘Increasing the percentage of concentration of alcohol (a depressant) solution, into which a Daphnia is immersed, will significantly cause its heart rate to decrease.’
Background Knowledge:
One of the most common crustaceans to be found in lakes, ponds and quiet streams is the 'water flea', Daphnia. These tiny animals are usually less than 3mm in size, so you could put dozens of them on a single fingernail. They're not really fleas – in fact they're not......
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Approximate Word Count: 3363
Approximate Pages: 13 (260 words per double-spaced page) |