In plants, all cells contain a gene that codes for the production of the pigment chlorophyll. however, chlorophyll is present primarily in leaf cells. which statement best explains the reason for the absence of chlorophyll in other plant cells?

Explanation:

Multiple pigments allow the plant to have both photosynthesis and cellular respiration to maximize the amount of energy they capture from the sun. ... Multiple pigments absorb different wavelengths of light, allowing the plant to capture the maximum amount of energy from the sun.Chlorophyll is found in the thylakoid sacs of the chloroplast. The chloroplast is a specialized part of the cell that functions as an organelle. Once the appropriate wavelengths of light are absorbed by the chlorophyll into the thylakoid sacs, the important process of photosynthesis is able to begin.There is a small, but very important molecule responsible for this called chlorophyll. All plants have chlorophyll, which is a green pigment in leaves and stems. Chlorophyll is a light-absorbing pigment, and it actually gets its green color because it absorbs blue and red wavelengths of light...

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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satellites are frequently used to make observations of the orbit on earth