Ectother's Metabolic Rate

Ectothermic animals are animals whose body temperature is affected by their surroundings. This means that if the environment is cold the animal will be cold. If the environment is warm the animal will be warm. This is because the animal doesn’t have the capability of regulating its body systems to keep a constant body temperature. When an ectothermic animal is cold, its heart rate will lower. When the animal is warmer, the heart rate will raise – as long as the temperature isn’t sufficiently high to harm the animal. (Campbell, 2005)

Hypothyroidism can affect the body temperature because it slows down the metabolism. This causes the energy produced to be less. With that

Freeman (2008) furthers Eckert et al’s argument by stating that the actin filaments of the muscle cell in organisms are able to intake ATP (adenosine triphosphate) faster and will move the organism faster when higher temperatures are imposed. This is because of an increase in enzyme reaction rates (Freeman 2008). These arguments can be applied to our experiment to help explain the trends observed. It can be argued that as the Gammarus setosus experiences the cold treatments, the organ of Bellonci senses the cold temperature, which in turn signals the organism to preserve its energy to protect itself; therefore, the organism will swim slower. In addition, the enzymes in the muscle cells of the organism, when experiencing the cold treatments, will have decreased ability to carry out enzymatic reactions, therefore inhibiting the uptake of ATP, which will cause the organism to swim slowly. Conversely, as the organisms are put into the heated treatments, the organ of Bellonci senses the heat, and allows the organism to swim faster, since it does not have allocate as much of its energy towards survival. Furthermore, the enzymes in the cells will be able to catalyze reactions more quickly, therefore allowing the organism to swim faster. However, when the temperature of the surroundings is too high, the enzymes will denature, therefore, reducing the activity rate of

direct calorimetry. Furthermore, the amount of oxygen in the chamber reveals the amount of cellular respiration of the organism. While also, test the effects of decreasing oxygen, and later increasing the heat on the metabolic rate of goldfish. I hypothesize that an increase in temperature will increase their metabolic rate

Ectotherms like Gryllus (Niehaus 2012), commonly known as crickets, instead depend on external sources for their body heat. Ectotherms must use the environmental energy and behavioral adaptations to shift their body temperature. The basal metabolic rate (BMR) is a measure of the rate at which an organism releases heat after breaking down food molecules. Crickets possess the ability to respond to thermal change by

An explanation of the physiology of two named body systems in relation to energy metabolism in the body. (P4)

We have noticed in other experiments that smaller animals have a higher surface-to-volume (SA/V) ratios than larger animals with a lower SA/V. After reviewing through articles, we hypothesized that endotherms with small bodies will have a higher metabolic rate than endotherms with large bodies. We tested this by making 6 clay cubes (different sizes) and placed them in ice for 10 minutes and measured them in 2-minute intervals. Our results supported our hypothesis because the larger clay with the smallest SA/V had the slowest cooling rate while the smallest cube with the higher SA/V had the fastest cooling rate.

The purpose of this lab is to analysis goldfish an ectothermic animal affect toward different temperature ranges. The reactions toward the temperatures are taken upon the term of homeostasis, which is regulation for organisms to maintain a steady state while adapting to the conditions that are favorable for survival (Encyclopedia Britannica). In order to achieve a successful homeostasis, many animals use different methods of thermoregulation, which helps maintain the internal temperature of animals. Many methods vary whether the organisms is an endotherm or ectoderm. An endotherm, which includes mammals and birds, is a warm-blooded animal, which maintains a constant body temperature not influenced by the environment (Britannica).

The muscular system also helps to keep us warm and keep us at the correct temperature. Thermoregulation is a process that allows your body to maintain its correct temperature of 37 degrees c. Muscles contribute to your bodies temperature because they receive messages from the brain when you are cold. Our bodies response to being cold is shivering which warms you up on the other hand if you are

Hypotheses- Our hypothesis stated "If we put a worm in cold temperature it will make less CO2, if we put a worm in hot water, then it will do more CO2 and if we put a worm in room temperature it will make normal CO2." Our hypothesis was correct, because the hot did the most cellular respiration, the room did make normal amount of cellular respiration, and the cold did make the least amount of cellular

Abstract: Metabolism is used to refer to all of the chemical reactions involving energy transformations in the cell of the body, for example cellular activity such as cellular respiration and its sub activtys like glycolysis, Krebs Cycle and the Electron Transport Chain all produce energy in the form of ATP and a byproduct of the energy production, heat is also produced . Although the cell is not 100% efficient thermodynamically, the energy in the form of heat is lost in the cell each time when energy is produced. Metabolic rates of an organism can be measured directly by the amount of heat lost from the body in a certain period of time. Another way an organisms metabolic rate can be measured is indirectly, by measuring the amount of oxygen that is consumed in a given period of time. In the experiment conducted, we needed to find the metabolic rate of an ectotherm. Using a goldfish (ectotherm) we calculated the metabolic rate by means of counting the number of operculum beats when three different goldfish where submerged in various temperatures. What was found is that the metabolic rate increased when the temperature increased and the metabolic rate decreased as temperature dropped.

Somewhat more precise descriptions can be made by using the terms poikilothermic and homoiothermic. The body temperature of poikllotherms is relatively variable, while that of homeotherms is relatively constant.

Countercurrent heat exchanger in the paws (anatomical/physiological) - Along with many other animals including domestic dogs, there is a mechanism in the paws of arctic wolves that keeps them at a lower temperature than the body core so minimizing heat loss via this extremity that is in contact with the ground. Blood entering the paws is used to heat up blood that is leaving, this prevents the core from being cooled by heat loss at the extremities. Similar mechanisms are also found in the feet of birds such as ducks and penguins.

One of the most noticeable forms of homeostasis in Betta splendens is temperature regulation. This is because alterations in water temperature change the metabolic and biochemical functions in fish. (Ostrander, 2000) Enzymes within cells require an optimal temperature for them to function efficiently. The internal temperature of an animal is constantly being reported by sensors in blood vessels to the hypothalamus. After the temperature has been analysed by the hypothalamus, appropriate changes are made, often in the form of behavioural adjustments. The Betta splendens is a poikilothermic animal, an animal whose temperature is dependent on the temperature of their external environment.

Metabolism is defined the sum of all chemical reactions which occurs and are involved in sustaining life of a cell, and thus an organism. Metabolism is of the following two types: catabolism and anabolism. In catabolism, molecules break down producing energy