BIOL 240 Lecture Notes - Lecture 20: Heterotroph, Blood Sugar, Poikilotherm
13 Nov 2018
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Document Summary
Energy requirements are related to animal size, activity, and environment. The overall flow and transformation of energy in an animal is part of its bioenergetics. Consider an animal"s nutritional needs, size, activity, and environment. Organisms can be classified by how they obtain chemical energy. Autotrophs, such as plants, harness light energy to build energy-rich molecules. Heterotrophs, such as animals, harvest chemical energy from food. Energy-containing molecules from food are usually used to make atp, which powers cellular work. After the needs of staying alive are met , remaining food molecules can be used in. Biosynthesis includes body growth and repair, synthesis of storage material such as fat, biosynthesis and production of gametes. Metabolic rate is proportional to body mass. Smaller animals have higher metabolic rates per gram than larger animals. To the power of 3 quarters (m 3/4 ) Higher surface to volume ratio in smaller organisms is the explanation.
