Isomerization of glucose 1-phosphate to glucose 6-phosphate is energetically favorable. At 37°C, ?G° = –1.42 log10K. What is the equilibrium constant for this reaction if ?G° = –1.74 kcal/mole at 37°C?
(a) 16.98
(b) 0.09
(c) –0.09
(d) 0.39
(a)
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The heavy line in the figure above illustrates the relationship between auxin concentration and cell growth in stem tissues. If the same range of concentrations were applied to lateral buds, what curve(s) would probably be produced?
A) I B) II C) III D) II or III E) I or III
Some present-day bacteria use a system of anaerobic respiration characterized by an electron transport chain analogous to that found in aerobic organisms. Which of the following correctly characterizes the anaerobic electron transport chain?
A. It uses oxygen as a final electron acceptor. B. It is embedded in the outer mitochondrial membrane rather than the inner mitochondrial membrane. C. It establishes a proton gradient between the cytoplasm and the extracellular fluid. D. It establishes a proton gradient between the intermembrane space and the cytoplasm. E. None of these answer options accurately characterizes the anaerobic electron transport chain.
Which brain structure plays a central role in homeostasis?
a. thalamus b. hypothalamus c. cerebrum d. brain stem e. cerebellum
Which phase occurs during mitosis?
A) first gap phase B) metaphase C) second gap phase D) S phase