Since the number of each type of atom in the photosynthsis reaction remains the same before and after the reaction, the mass stays the same as well. True or False?

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.  

read more on -

c. the initial amount of money placed in the savings account

the answer would be d : p