Defectuos Daphnia Experiment Report

One of the common disease in America caused by the excessive consumption of sugar is obesity. In America, the obesity rates had increased in the last decades and affects different on each person. The effects of sugar on people depends on the race, gender, and age of Americans. According to an

This experiment is being done to show the effect oh pH levels on daphnia by changing pH levels and measuring the hear rate.

Do you ever wonder how much sugar is in your food? This research is going to talk about the sugar contained in your food. Terms that will be discussed in this paper include sucrose, carbohydrates, glucose, and enzymes.

Regarding temperature changes, the null hypothesis is that their heart rate will remain constant regardless of increasing or decreasing the external temperature of the Daphnia. The alternative hypothesis is that the heart rate will increase with more heat and will decrease with a decrease a decrease in temperature, meaning that heart rate and temperature are directly related. In regards to the chemicals acetylcholine and epinephrine, the null hypothesis is that both chemicals will have no effect on the heart rate of the Daphnia. In contrast, the alternative hypothesis is that their heart rate will increase with exposure to epinephrine and decrease with exposure to

In this experiment the four different types of sugar substitutes will be tested with yeast to determine if the type of sugar substitute directly affects the respiration rate of yeast. The four different types of sugar substitutes include Saccharin (Sweet ‘N Low),

Firstly, the fact that only one daphnia was tested in the experiment minimizes the results accuracy greatly. If the experiment had been carried out on more daphnia, an average of averages could have been calculated for in water and in caffeine solution.

The purpose of this experiment was to test the affect of caffeine on the heart rate of Daphnia by observing their behavior and heart rate under a microscope when exposed to different concentrations of caffeine. Caffeine is a stimulant drug used in many energy drinks and causes large amounts of stimulatory neurotransmitters to be released. Therefore, as caffeine is a stimulant drug it was hypothesized that the Daphnia heart rate would increase immensely. Daphnia is a group of microscopic, planktonic crustaceans that are arthropods that measure 1-5 millimeters in length. Daphnia live in multiple aquatic environments such as freshwater lakes, ponds and rivers. “The development of genomic infrastructure coupled with a wide range of phenotypic diversity make Daphnia a versatile model

Studies of Daphnia presented information which elluded to the idea that Daphnia would react to environmental pollutants within a relatively short timeframe; therefore, a lab was constructed to find the effects of copper sulfate in a Daphnia’s system. Before beginning, the hypothesis was gathered: if the concentrations of copper sulfate in the water are high, then the Daphnia would be afflicted with symptoms associated with physical decline. Daphnia, known as water fleas, are small crustaceans who get their common name from their jerky movements. The organisms reside within lakes and ponds often in limestone-based areas found all over the world. Daphnia consume algae, specifically the free-living green type, yeasts, and bacteria; therefore,

Background: Daphnia is also known as diploid or water fleas belong to a group of animals named crustaceans. They are too small to be seen with the naked eye. There are two chromosomes are from the father and mother also, they are multicellular. They live in freshwater and in a few terrestrial habitats. (Textbook 595 & 680)

Exploration of an indirect effect on the foraging behavior of a Guppy (Poecilia reticulate) on Daphnia due the introduction of a “third species”

In this lab I did an experiment to see the effect of Ethanol on Daphnia. The purpose of this lab was to see is there effect of Ethanol on Daphnia’s heart rate. I used Daphnia for this experiment because it a transparent crustaceans meaning we see its heart and other stuffs from outside. In the experiment first, I measured the number of heartbeats of Daphnia without any treatment for 10 seconds. I measured the heartbeats for three times for no treatment, the average heart rate was 22. Seconds I putted 15% of Ethanol on Daphnia and waited for 30 seconds then I measured the number of heartbeats of Daphnia for 10 seconds. I measured the heartbeats for three times and the average of heart rate was 15. At last I found out that Ethanol does affect

Biologically, sugar effects the brain very dramatically than what they knew around the 1700- 1900’s. When sugar is in your bloodstream the body reacts the same way as if

Question: how do natural sugars and unnatural sugars affect the rate of cellular respiration in yeast?

The spike in blood glucose levels after ingestion of simple sugars is thought to be related to some of the heart and vascular diseases which have become more frequent in recent times. Simple sugars form a greater part of modern diets than formerly, perhaps leading to more cardiovascular disease. The degree of causation is still not clear, however.

The research performed by Lorenzo Cohen and his team at the University of Texas, pointed out that sugar fuel cancer growth and refined sugar as the major culprit of cancer. The