Photosynthesis & Respiration

Sunlight makes the chlorophyll (thylakoid body) electrons very exciting. They are very excited, they need to be carried by a special carrier molecule called NADP +

The cycle of photosynthesis and respiration keeps the balance between oxygen and carbon dioxide. Photosynthesis produces oxygen to supplement the oxygen consumed by living things during breathing. Carbon dioxide generated during breathing is one of the reactants necessary for plant photosynthesis.

Humans, animals and plants rely on cycle of cell respiration and photosynthesis to survive. Oxygen produced by plants during photosynthesis is the process by which humans and animals suck blood and transport them to the cell for breathing. Carbon dioxide produced during respiration is released from the body and absorbed by plants, which helps to supply the energy needed for growth and development. This is an endless cycle to sustain life on Earth. Plants and other photosynthetic organisms use photosynthesis to produce energy, but the cell respiration process breaks down the energy used. Despite the differences between the two processes, there are some similarities. For example, both processes synthesize and use energy currency ATP.

To utilize the energy stored in photosynthesis, plants use the breathing process (like all other mitochondrial organisms). This is essentially the opposite of photosynthesis. During breathing, glucose is broken down to produce energy that the cell can use. This energy uses O 2 and produces CO 2 as a byproduct. Since leaf discs are still living plant materials that require energy, they use O 2 gas simultaneously during breathing and produce O 2 gas during photosynthesis. Therefore, the O 2 foam you see represents the net product of photosynthesis minus O 2 used for breathing.