B-galactosidase is a hydrolase enzyme that catalyzes the hydrolysis of b-galactosides into monosaccharides. a .799 gram sample of b-galactosidase is dissolved water to make .193l of solution, and the osmotic pressure of the solution at 25 (celsius) is found to be .882 mbar. calculate the molecular mass of b-galactosidase. im so lost on this question.

the answer that best describes the relative refractory period in the neuron is the resting membrane potential is restored, but concentrations of sodium and potassium are not restored to their original state.

the refractory period is the time during which another stimulus given to the neuron will not lead to a second potential. thus, because na+ channels are inactivated during this time, additional depolarizing stimuli do not lead to new action potentials.  

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