Does Caffeine affect the heart rate of Daphnia

Essay specific features

 

Issue:

Science

 

Written by:

Marlon C

 

Date added:

August 8, 2014

 

Level:

University

 

Grade:

A

 

No of pages / words:

4 / 1037

 

Was viewed:

7680 times

 

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Essay content:

It will be easier to observe as it has a translucent body, making it able to see the heart beating under a microscope. It will be a "blind study" to avoid bias results, so everyone will be unaware what the solution consists of. Purpose The purpose of my experiment was to determine how caffeine affected the heart rate of Daphnia...
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My theory can be backed up well, as caffeine is a stimulant that speeds up the body affecting the nervous system and rate in which the nerve pulses are sent and received in humans. Materials ? Daphnia ? 6 Cavity slides ? Dropping pipette ? Distilled water ? Caffeine solutions ? Cotton wool ? Pipettes ? Test tubes ? Stop clock ? Paper towels or filter paper ? Microscope Method ? Place a few strand of cotton wool onto the cavity slide, this will help restrict the movement of the Daphnia making it easier to see under the microscope...
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