Can someone help me I don’t know which goes with which it’s different structures of the cell membranes

Kelly ran electricity though a sample of water using electrolysis. the water changed into two gases, x and y. it was not possible to break down the gases x and y into simpler particles.

Aflame cell is at the end of each tubule of the nephridium malpighian tubules kidneys none of the above

Photosynthesis uses co2 and cellular respiration produces co2. we call the point when the two processes are in balance--when there is no net production of co2--the compensation point. how might you limit one of the processes in order to achieve a compensation point?