The equilibrium constant (K'eq) for the reaction, glucose-6-phosphate + water ? glucose + phosphate, is 260. What is the ?G°' for this reaction? What do the values of K'eq and ?G°' tell you about this reaction?
What will be an ideal response?
Answer: The ΔG°' is −3292 cal/mol. The large K'eq indicates that at equilibrium the concentration of glucose and phosphate is much higher than the concentrations of glucose-6-phosphate. This translates into a negative ΔG°', which indicates that the reaction should occur spontaneously under standard conditions.
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Which one of the following statements about gills operating in water is FALSE?
A. Water can support delicate gill structures. B. Most fish actively pump water over their gills. C. Keeping membranes moist is not a problem. D. Water carries more oxygen than air and this requires gills be more efficient than lungs. E. Gills have evolved many times and take different forms in aquatic animals.
Which of the following could be a valid scientific hypothesis?
A) Moray eels find their prey primarily by following chemical cues. B) All marine animals must have gills. C) It is immoral to keep dolphins in captivity. D) Dogs are superior in intelligence and swimming capabilities compared to seals.
A prokaryotic cell wall that has primarily peptidoglycan with small amounts of teichoic acid and lipoteichoic acid is
A. a spheroplast. B. acid fast. C. archaea. D. gram-negative. E. gram-positive.
True of False: Escherichia coli is positive for motility.
What will be an ideal response?