An experiment was done to determine if the time it takes to run a kilometer is related to the amount of exercise a person gets. The time it takes to run a kilometer is which type of variable? a. Independent Variable

b. Dependent Variable

B

Explanation:

because it would depend on how fast ur rining and if there was a hill in the middle it would take longer =]

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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photosynthesis makes the glucose that is used in cellular respiration to make atp. the glucose is then turned back into carbon dioxide, which is used in photosynthesis. while water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.