How is cellular respiration different from photosynthesis?

Photosynthesis produces oxygen, and cellular respiration produces carbon dioxide

In cellular respiration, we intake oxygen and exhale carbon dioxide, while in photosynthesis, plants use carbon dioxide and produce oxygen as a product

Cellular respiration is the process by which living things convert oxygen and glucose to carbon dioxide and water, thereby yielding energy. ... While photosynthesis requires energy and produces food, cellular respiration breaks down food and releases energy.

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 -