The concentration of sodium and potassium ions inside and outside a nerve cell must be reset each time the transition of a nerve impulse occurs. both ion types are able to move across the nerve cell membrane against the concentration gradient. To maintain these gradients, nerve cells depend directly on the chemical output of which other cell process. mitosis
replication
respiration
transcription

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. ph changes the ability of them he enzyme to dissolve in water.

what is the statement?

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.