Question 1 of 10 Plants make glucose using energy from the sun and two molecules. Which
two molecules do they use?
O A. Ethane and ammonia
O B. Carbon dioxide and water
O C. Nitrogen and oxygen
D. Water and oxygen

the answer is B carbon dioxide and water

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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bacterium is not correct