Introduction Metabolism is the sum of all anabolic and catabolic reactions within a living organism to sustain life. The energy required to perform these reactions is provided by oxygen in the form of ATP, therefore the oxygen consumption rate can be measured to determine the metabolic rate. Since oxygen is obtained through respiration, the efficiency of an organism’s respiratory system affects its metabolism. Previous studies have shown that caffeine affects the human respiratory center and occasionally dilates bronchus. It can thus stimulate human respiration and increase the metabolic rate (Haggins et al, 1915). Including human, most mammals and birds are homeotherms that regulate their body temperature internally to keep it relatively …show more content…
Before getting the goldfish subjects, two beakers were filled with 200 ml fish water and weighed. Four goldfish were then collected gently from the fish tank and each two of them were transferred into one beaker. Each beaker along with fish and water was weighed again to determine the weight of each pair of goldfish. For the control group of each trial, the oxygen chamber was firstly filled with 200 ml fish water; after two goldfish along with 200 ml water were transferred into it, it was sealed in order to prevent oxygen exchange with the ambient environment. The built-in probe in the chamber measured the dissolved oxygen concentration in the chamber’s water (mg/L), which could reflect the oxygen consumption rate of goldfish. After the fish accommodated to the new environment, the oxygen concentration data were collected every 20 seconds for 10 minutes by the Logger Lite program. The data were then plotted into a scatter chart and analyzed with a linear trendline, to obtain …show more content…
Nonetheless, besides fish, many other kinds of poikilothermic animals, such as snakes and frogs, use lungs instead of gills to breathe, and further researches may be conducted to explore if caffeine has an effect on their metabolism. For example, forty northern leopard frogs with similar body size will be captured and divided into twenty trials, and each two frogs will be tested in the same control and experimental conditions as the goldfish metabolism experiment did. The collected slopes of oxygen concentration will then be converted into oxygen consumption rate and analyzed by the paired t-test. If the difference in the oxygen consumption rate between the control and experimental groups is statistically significant, this experiment will show that caffeine affects the metabolism of frogs, one kind of poikilotherms that use lungs to
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Caffeine, Nicotine, ethanol, and a control solution were tested. The heart rate of Daphnia was measured after exposure to each of the chemicals. After testing, it was found that ethanol depressed the heart rate while exposed, but the heart rate stabilized after exposure. With exposure to nicotine, the heart rate increased by 20%. If more nicotine was added, the effects were varied and sometimes irreversible.
The chloroform and caffeine mixture was collected and into a conical flask labeled A. The remainder of the solution was discarded. This was repeated for beakers B and C. 9. Sodium sulphate was then added to each beaker to dry the liquid by getting rid of any remaining water from the solution. The sodium sulphate was then filtered and discarded.
Metabolism is responsible for converting nutrients in food that we eat in to energy. We need
Were dinosaurs warm blooded or cold blooded: Before beginning the argument we have to understand the term endothermy (homeotherms) and ectothermy (poikilotherms) : Endotherms: (endo, “inside”) , animals exhibit endothermy ,when they warm their tissues by the production of metabolic heat. Homeothermy : animals that thermoregulate by physiological means (rather than just by behaviour) Were dinosaurs warm or cold blooded ? Ectotherms : (ecto , “outside”) , animals exhibit ectothermy when thermal conditions outside the bodies of these animals determine their body temperature. Poikilothermy : body temperature of the animal is determined by equilibration with the thermal conditions of the environment and varies as environmental conditions vary.
Daphnia Magna are small crustaceans that are excellent for observing the effect of depressants on their nervous system. The purpose of this specific experiment is to observe the effect of ethanol, aspirin, and caffeine on daphnia’s heart rate. Not only do these chemicals affect heart rate, but they also affect the frequency of reproduction, number of eggs produced, and body structure. Pesticides similar to these chemicals can be released into the environment and daphnia re useful in monitoring toxicity levels. The agents being tested in this experiment can be administered to determine the effects of hormones, stimulants, antidepressants, and neurotransmitters.
In the Penny Boat Lab, we made a boat to hold pennies in water. First, we collected materials we needed which were scissors, a ruler, water, pennies, aluminum foil, a triple beam balance and a container. Using the ruler, we measured the foil 15cm by 15cm, then cut excess pieces. Next, we had to fold the foil into a “boat”. After, we measured the mass of our boat using the triple beam balance.
Caffeine is a chemical found naturally in few plants all over the world. From these plants it is processed into its pure form and then put into other things such as soda, energy drinks, tea, and pills. Energy drinks and soda are some of the most widely marketed products in the world, even though they contain the highest concentration of caffeine outside of pure caffeine supplements. It is a stimulant that affects everyone in strange but semi predictable ways. Research has been done on this topic since the 1920’s and many different conclusions have been reached.
The crude caffeine was transferred to Petri dish. Petri dish was placed on a hot plate and covered with three disks of filter paper. Another petri dish filled with ice was placed just on the top of petri dish covered with filter papers. The heat was turned on and sublimation was performed for 5 minutes. The purified caffeine was scraped from the filter papers and its weigh was measured.
Whenever a consumer uses an energy drink a series of effects begin in his/her body. The organism receives an instant boost as the caffeine successfully manages to block the duties of the adenosine, a chemical located in the brain whose function is involved with sleeping. After the completion of the process caffeine forces part of the neurons in the brain to lighten up, which later on causes the body to release the hormone adrenaline. When the hormone is active it forces the liver to provide the bloodstream with additional
Another aspect of the cheetah’s survival is their respiratory system. Compared to other cats and humans, the cheetah’s nostrils are a lot bigger. These large nostrils and nasal passages allow the cheetah to breathe faster and let maximum air to enter the body and add fuel while the it sprints. The maximum amount of air enters the large lungs, which are able to energize the blood with a lot of oxygen. This rich oxygen is then pumped by the heart, as mentioned
Ever since the industrial revolution commenced, around one third of the carbon dioxide released by human interference has been absorbed by the ocean, which is one of the reasons of the drastic change in climate as well. Without the ocean absorbing carbon dioxide, the carbon dioxide n the atmosphere would be drastically higher, with possibly increasing the levels of climate change. The point of the research is to see how will the pH affect the organisms in the marine ecosystem and does carbonation affect an organism’s mass and form. Many organisms that are part of the marine food chain are going to be affected by ocean acidification due the levels of acidity deteriorating the calcium carbonate within the animal. It turns out
Frostbite happens when the skin and tissues freeze and become damaged due to exposure to freezing temperatures. Commonly affected areas include the feet, hands (especially the fingers), nose, cheeks, and ears. Frostbite can be mild or severe. Mild damage may be reversible, but severe frostbite may result in permanent tissue death or loss. CAUSES