Question

How are cellular respiration and photosynthesis opposite reaction?

Answer 1

Photosynthesis and cellular respiration are complementary processes by which living things obtain required substances for their body. Both processes consume and create the same substances (water, glucose, oxygen, and carbon dioxide) but in different ways. Through these processes, plants receive the carbon dioxide they need and living organisms acquire the oxygen they need.

Complete answer:
Photosynthesis is the process by which green plants create their food by turning light energy into chemical energy. Chlorophyll in the leaves converts carbon dioxide, water, and minerals into oxygen and glucose. Photosynthesis is carried out in the chloroplasts of cells. In this process, the carbon dioxide and water in presence of sugar get converted into sugar and oxygen. But Cellular respiration, on the other hand, is the process by which living things convert oxygen and glucose to carbon dioxide and water, thereby yielding energy. It does not require sunlight and is always occurs in living organisms. Cellular respiration is carried out in the mitochondria of cells. Cellular respiration and photosynthesis are biological processes in which matter and energy flow through the biosphere. These two processes are responsible for the exchange of oxygen and carbon dioxide between living organisms and the environment. Photosynthesis is the process in which carbon dioxide and water react to form oxygen and glucose. Glucose is obtained as food by the plant and oxygen is a by-product. Cellular respiration is a process in which oxygen and glucose react to produce water and carbon dioxide. Water and carbon dioxide are byproducts and ATP is the energy that is transformed from the process.

Note: Both the processes are important for plants to sustain life and have a great role in a plant for growth and development. It also has some differences such as cellular respiration is a catabolic process and photosynthesis is an anabolic process.