In Vertebrate Animals,brown Fat Tissue's Color Is Derived from Abundant

question 77

Multiple Choice

In vertebrate animals,brown fat tissue's color is derived from abundant blood vessels and capillaries.White fat tissue,on the other hand,is specialized for fat storage and contains relatively few blood vessels or capillaries.Brown fat cells produce the protein thermogenin,which is an ion channel that facilitates diffusion of protons across the membrane.Which of the following statements might best describe the function of the brown fat tissue?

• A)to increase the rate of oxidative phosphorylation from its few mitochondria
• B)to increase the metabolic rate when it is especially hot
• C)to increase the rate of ATP production
• D)to regulate temperature by converting most of the energy from the mitochondrial proton gradient to heat

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