Defectuos Daphnia Experiment Report

effected the heartbeat rate of a Daphnia. The results of the experiment were that the

The experiment goal was to measure the effects that different water temperatures had on the Daphnia's heart rate and the effects of epinephrine as well. Daphnia is commonly known as water flea bugs that are small aquatic crustaceans that is found plentifully in small bodies of fresh water (General Biology Study Guide and Lab Manual, 10th ed. 2007). These water bugs are good animals to use for this type of experiments because they are large enough to be seen without a microscope in light and under the microscope at twenty times magnification their internal organs can be seen straight through their body cavity. Daphnia are ectothermic creatures, meaning

I analyzed my Daphnia Magna everyday by observing if the Daphnia were alive or not at the end of each day. I did this by observing if the Daphnia had sunk to the bottom of the container and not moving at all for a long time. For Trial 1, SIXDAYSOX had 2 Daphnia alive while Gmark and Vitalsox only had one alive. For Trial 2, on Day 1 all the sock brands started out well and all four Daphnia survived. On Day 7 of Trial 2, Vitalsox had two Daphnia left while Gmark and SIXDAYSOX had only one alive.Also for Trial 2 one of the 4 control Daphia had died. For Trial 3, Gmark and SIXDAYSOX both had 4 Daphnia left while Vitalsox had three remaining. On Day 7 of Trial 3, Gmark had no Daphnia alive while SIXDAYSOX and Vitalsox both had one remaining.

Daphnia Magna will be used to measure how quickly dead zones are forming by eutrophication. We will use three different endpoints to measure the Daphnia Magna: Heartbeat, Mobility, and Mortality. We will have three fertilizers mixed with pond water in three separate test tubes per fertilizer with Daphnia Magna and one without ferilizer as the control. There will be three different sets each set will contain four test tubes: Three test tubes each with different fertilizers and one without as the control. We will then measure the three endpoints of the Daphnia Magna after thirty minutes which will be repeated for each set thus the whole experiment will last 90 minutes. The equipment needed for the experiment is the following:

Do you love meringues but are diabetic? Some people aren’t able to eat specific sugars so they can’t enjoy simple desserts. I’ve been thinking about this, so I decided to do an experiment with this. What effect does different sugars have on meringues? Diabetic people can have some types of sugars, so they're allowed to use alternatives like Stevia instead in meringues.

Daphnia belong to the phylum of arthropod; the subphylum of Crustacea; the class of brachiopod; and the order of Cladocera.

My hypothesis was supported in the experiment due to the fact that caffeine raised the beats per minute, while kava drastically decreased the amount of heart beats in a given minute. By looking at figure 1 you are able to see that kava decreased the heart rate by -46 beats per minute, while the caffeine raised the beats to 26 per minute. This supports the conclusion that the stimulation humans receive off of caffeine has a similar effect in Daphnia Magna. Caffeine raises the beats per minute in each individual, while kava decreases the amount of beats. This is due to kava’s relaxation properties found within it’s roots commonly called kavalactones. I assumed that the effects of caffeine and kava on humans would be similar to those of Daphnia

The objective of this study is to know what is the effect of oil released in lake to the organisms that live there. There are eight experiments done, by the use of the organism Daphna magna. In sample container there is oxygenated, dechlorinated water and 0.2% motor oil. The daphna magna was also added. Every 24 and 48 hours will record how many organisms are alive. For the results, 50% of the organisms die.

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?

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),

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 experiment posed some small floors that most likely changed the results of the experiment. For example, by the time the 1% ethanol was added the daphnia would have already been feeling fatigue as it had just reacted to the 1% caffeine solution which increased its heart rate dramatically and it would also be feeling drowsy from the minimal amount of water it was living in providing it a very small amount of oxygen. To fix this issue I believe we could have added

Purpose Statement: To inform my audience of the effect sugar has on the human body.

Sugar is linked to obesity. Obesity is a cause of diabetes. Therefore some people believe sugar is not the cause of diabetes, obesity is. ¨However sugar primes the body for obesity which cause diabetes.¨according to webmd.com. A study in prev.com shows,¨One study found that for every extra 150 calories from sugar available per person each day, diabetes prevalence rises by 1.1%.¨ For example eating too much sugar can cause obesity, when obesity occurs, there is a large chance for diabetes. Sugar does not cause diabetes but it is a leading