Endotherm Lab

Temperature and environment plays a key role on the effects of an ectothermic organism’s metabolism. The specific ectothermic organism used in this study was the Gromphadorhina portentosa also known as the Madagascar Hissing Cockroach. In this study we measured CO2 production (%) and temperature (̊C) every three minutes for a total of 15 minutes in three different temperature environments. The three temperature environments conducted in the experiment included room temperature, a cold environment (ice bath), and a hot environment (how water bath). The purpose of this study was to test the effects of temperature change on

Endothermic reactions are accompanied by the absorption of heat. The dissolving of ammonium nitrate in water is an example of an endothermic reaction. The solution resulting from this mixture is colder than either the ammonium nitrate or the water. This is the simple explanation of what happens in an instant ice pack. The more detailed information will be discussed in the following paragraphs.

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

The principal objective of this study was to determine how temperature affects the activity of

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.

A positive correlation was observed between the entropy of activation and environmental temperature, with large negative values for ΔS ‡ for the cold-adapted species and high positive values for the tropical species. Therefore, as temperature increases the entropy of activation causes the Gibbs energy of activation to have a lower value making it more spontaneous with an increase of temperature. On the other hand, there was a positive correlation between enthalpy of activation and environmental temperature, with a range of ΔH ‡ from 6,850 calorie mol-1 for the Antarctic species to 33,300 calorie mol-1 for a species from an equatorial hot springs soda lake. Consequently, as the temperature increases the enthalpy of activation causes the Gibbs energy of activation to have a higher value making it less spontaneous with an increase of

Thermoregulation is a process by which the body temperature is controlled and maintained within a range that enables the organism to function efficiently when variations occur in the temperature of the surrounding environment. This is important to ensure that the blood flowing through vital organs like the brain and the heart are kept at an ideal and constant temperature (Homeostasis, n.d.). In this lab, mealworms are used. Although referred to as a “mealworm”, it is not a worm but instead the larvae of the darkling beetle species called Tenebrio molitor (Gomez, n.d.; Tenebrio molitor, n.d.). Usually, the heat generated from cellular metabolism determines body temperature, but mealworms are ectotherms, which are organisms that depend mostly

Endotherms are animal such as modern birds and mammals that keep their body temperature constant. The passage claim that the dinosaursre differ many ways from modern repitiles and there is now considerable evidence that dinosaures were in fact endotherms. But the the professor cast doubt with the passage.

Endotherm are animals that regulate internal temperature at a range dispie ambient temperature changes. This research will aid to identify how different ambient temperature will affect the mice’s metabolic rate. Previous research suggest that thermo neutral zone is the range which endotherm conduct metabolic with least stress. However to understand the exact relationship between the change in ambient temperature on endothermic metabolic rate, metabolic system measurement would be carried out to measure the ambient temperature and oxygen percentage. The hypothesis was that as the mices experiences ambient temperature outside of their thermal neutral zone, then they will intake more oxygen because more metabolic activities need to take place

As such, all their physiological processes are directly associated with temperature, as well as their immune function, their feeding regimes as well as their assimilation, reproduction, growth and development (Lance, 2003; Lang & Andrews, 1994).

The hot/cold lab is an example of phase changes. With ice in water being slowly heated over a period of twenty five minutes, the three phases of matter were exhibited. The initial phase was a solid, the water used was ice. After being heated for around seven minutes, the solid ice had another phase change, it became a liquid, just water. At around twenty four minutes of being heated, the water finally boiled in order to change into a gas. The data we collected shows the increase in temperature as the phases changed. Antoine Lavoisier₁ was a French chemist who first wrote about these phase changes. He described the three different types of phases as “solid like stones...fluid like water...a third state which I shall call the state of expansion

Thermoregulation is important, especially in humans, as temperatures above 40 degrees Celsius cause enzymes to denature rapidly. Enzymes have an optimal range for catalysing reactions. Temperatures below this cause for the rate at which reactions occur to decrease, whereas temperatures above this can lead to the denaturing of enzymes and important metabolic reactions unable to occur. Therefore it is essential for enzymes in the body to be functioning.

Furthermore, Walthall et al. 2013 confirmed that livestock production systems are susceptible to stress arising from temperature fluctuations. The ability of livestock to adjust their metabolic rates to meet the temperature changes

Findings can be related to simple celled organism and multiple cellular organisms because the ratio may be larger in large cellular organisms than single celled organisms thus results in a greater rate of heat transfer which makes it more difficult to withstand harsher conditions. This means multiple celled organisms, like the Emperor penguin, need ways to regulate their interior temperature and ensure the body’s temperature only decreases when necessary while simpler organism (e.g. extremophiles which live in extreme environments) also thermoregulatory mechanisms in order to survive but can be preserved at colder temperature and revived when heated. All organisms require energy and temperatures within a certain range to optimally function.

The body temperature of most domestic animals is considerably higher than the environmental temperature to which they are exposed most of the time. They maintain their body temperatures by balancing internal heat production and heat loss to the environment. The hypothalmus gland acts as a body thermostat by stimulating mechanisms to counteract either high or low ambient temperatures (FAO, 1986). For example, increased conversion of feed to-heat energy is used to counteract low ambient temperatures, while for example increased respiration (rate and volume) and blood circulation in the skin counteracts high ambient temperatures. Varying temperature also results in changed behavior . Most animals reduce their level of activity in a hot environment and, for example, pigs lie clustered in a heap at low temperatures, while they lie