29. In vertebrate animals, brown fat tissue's color is due to abundant mitochondria. White fat tissue, on the other hand, is
specialized for fat storage and contains relatively few mitochondria. Brown fat cells have a specialized protein that
dissipates the proton-motive force across the mitochondrial membranes. Which of the following might be the function of
the brown fat tissue?
(A) to allow other membranes of the cell to perform mitochondrial function.
(B) to increase the rate of oxidative phosphorylation from its few mitochondria.
(C) to allow the animals to regulate their metabolic rate when it is especially hot.
(D) to regulate temperature by converting energy from NADH oxidation to heat.
(E) to increase the production of ATP synthase.
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