Brown fat, found in small, hibernating animals and infants, has a protein that acts like DNP. We would therefore expect brown fat to heat production because O Decrease; it is more dense that regular "white" fat. This limits O₂ diffusion, thereby decreasing the rate of aerobic metabolism and, therefore, heat generation. Decrease; it contains more mitochondria. This increases the efficiency with which glucose catabolism is coupled to ATP Synthesis, and, therefore, less of the chemical energy of catabolism is lost as heat. O Increase; it is more dense than regular "white" fat, so it is a better temperature insulator. By maintaining the temperature of the organism closer to the optimal temperature for enzymes, metabolism, and therefore heat generation, is maintained. Increase; it contains a protein that forms a pore in the inner mitochondrial membrane. This allows H* to diffuse down its gradient without the energy being captured and coupled to ATP Synthesis. The energy is lost as heat.

Brown fat, found in small, hibernating animals and infants, has a protein that acts like DNP. We would therefore expect brown fat to heat production because O Decrease; it is more dense that regular "white" fat. This limits O₂ diffusion, thereby decreasing the rate of aerobic metabolism and, therefore, heat generation. Decrease; it contains more mitochondria. This increases the efficiency with which glucose catabolism is coupled to ATP Synthesis, and, therefore, less of the chemical energy of catabolism is lost as heat. O Increase; it is more dense than regular "white" fat, so it is a better temperature insulator. By maintaining the temperature of the organism closer to the optimal temperature for enzymes, metabolism, and therefore heat generation, is maintained. Increase; it contains a protein that forms a pore in the inner mitochondrial membrane. This allows H* to diffuse down its gradient without the energy being captured and coupled to ATP Synthesis. The energy is lost as heat.

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter2: Cell Physiology

Section: Chapter Questions

Problem 3SQE

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