Answer:
The process of photosynthesis is commonly written as: 6CO2 + 6H2O → C6H12O6 + 6O2. This means that the reactants, six carbon dioxide molecules and six water molecules, are converted by light energy captured by chlorophyll (implied by the arrow) into a sugar molecule and six oxygen molecules, the products.
There is one chemical process in biochemistry that has a reversible process. If you remember glycolysis, it actually has a reversible process. This reversible process is called gluconeogenesis. These two processes are reversible in response to glucose concentration in our bodies. When our bodies need energy, glucose breaks down into pyruvate through glycolysis. When our bodies need glucose for storage, pyruvate turns back into glucose through gluconeogenesis. Here are the processes:
