Daphnia lab

Investigating factors affecting the heart rate of Daphnia Class practical In the water flea Daphnia, the single, small heart is easily visible when viewed under transmitted light under a low power microscope. The heart rate which can be up to beats per minute can be monitored and counted in different conditions — for example changing water temperature, or changing the type and concentration of chemicals added to the water. A change in Daphnia heart rate may not be a predictor of a similar change in human or vertebrate heart rate under the same conditions, but the procedure provides an interesting technique for investigating the effects of different chemicals on a metabolic process. Thanks to the British Pharmacological Society for providing the teaching notes on this practical.

Daphnia lab

Daphnia lab

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. Risk assessment Prevention Caffeine Concentrations in eyes or spillages onto clothes.

Caffeine concentrations could splash into the eyes causing irritation, this could be prevented by wearing goggles. Also to prevent close being damaged by spillages a lab coat should be worn. Handling any glassware for example beakers or petri dishes with care.

Wearing goggles or a lab coat will help towards preventing any accidents. As well as different volumes of caffeine. Withthe sources of error affecting the results making them inaccurate, we could improve the reliability of the test by improving the count of the heartbeat of the Daphnia or using bigger animals so that the heart is easier and quicker to find.

Doing trial runs or repeating the test more times could help towards the reliability of the test.Daphnia Heart Rate – Lab Report Caffeine is a stimulant which is derived from leaves, flowers and seeds of plants.

Daphnia lab

The plant uses the caffeine as a way to repel insects as it is used as a natural pesticide by paralyzing and killing certain insects. Daphnia Heart rate - Lab Report Essay. Introduction: Caffeine is a stimulant which is derived from leaves, flowers and seeds of plants - Daphnia Heart rate - Lab Report Essay introduction.

The plant uses the caffeine as a way to repel insects as it is used as a natural pesticide by . LabBench Activity Key Concepts II: Temperature and Metabolic Activity. In the Cellular Respiration laboratory, you experimented with peas and saw how the rate of oxygen consumption during cellular respiration varied with yunusemremert.com that lab, you experimented with peas to see how the rate of oxygen consumption during cellular .

Students commonly test the effects of chemical agents on the heart rate of the crustacean Daphnia magna, but the procedure has never been optimized. We determined the effects of three concentrations of ethanol, nicotine, and caffeine and of a control solution on heart rate in Daphnia.

Daphnia Heart rate - Lab Report Essay. Introduction: Caffeine is a stimulant which is derived from leaves, flowers and seeds of plants - Daphnia Heart rate - Lab Report Essay introduction.

[BINGSNIPMIX-3

The plant uses the caffeine as a way to repel insects as it is used as a natural pesticide by paralyzing and killing certain insects. Daphnia and Additives Lab Purpose The purpose of this lab is to test what effect of Nicotine, Acetylcholine, Epinephrine, Caffeine, and Ethanol on an organism’s heart rate.

Using Daphnia to Monitor Water Toxicity