Lab Manual : Maintaining Homeostasis, Locomotion, Or Thermoregulation ( Bio 112 Lab )

1240 Words Oct 19th, 2015 null Page
According to the lab manual, “an organisms’ metabolic rate is the total energy used by all of the cells” (Bio 112 Lab Manual, 2015). Animals, unlike plants, are not primary producers and thus require the consumption of others in order to obtain necessary energy. Such energy can be used in three major ways according to the lab manual: maintaining homeostasis, locomotion, or thermoregulation (Bio 112 Lab Manual, 2015). In order to assess such energy expenditure, it can be measured in two ways: directly by measuring “the heat produced when an animal produces ATP through exothermic reactions” or indirectly by “us[ing] respirometry to estimate metabolic rate” (Bio 112 Lab Manual, 2015). Cellular respiration is one of the chief processes that provides an organism with the ability to survive and thus “is a continual process necessary to supply more ATP” (Bio 112 Lab Manual, 2015). In terms of cell respiration, animals breathe in oxygen and use it to perform cellular duties and as a result a waste product, carbon dioxide (CO2) is released as the animal respires. Photosynthesizing organisms then use this CO2 to perform a complimentary process of photosynthesis thus riding CO2 from the air and providing more oxygen for cells to use. By measuring the oxygen concentration in water while aquatic animals perform cellular respiration offers a method of indirect calorimetry and can allow researchers to estimate the metabolic rate of an aquatic organism (Bio 112 Lab Manual, 2015). However,…

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