The diagram shows a voltaic cell. The reaction occurs at 1 atmosphere and 298 K. Zn(s) + Pb (aq) Zri (aq) + Pb (s
When the switch is closed, the cell voltage (E) is
1
+0.63 V
2
+0.89 V
3
-0.63 V
4.
-0.89 v

answer: cellular respiration takes in food and uses it to create atp, a chemical which the cell uses for energy. usually, this process uses oxygen, and is called aerobic respiration. it has four stages known as glycolysis, link reaction, the krebs cycle, and the electron transport chain.