What is photorespiration process?

What is photorespiration process?

Photorespiration is the process of light-dependent uptake of molecular oxygen (O2) concomitant with release of carbon dioxide (CO2) from organic compounds. The gas exchange resembles respiration and is the reverse of photosynthesis where CO2 is fixed and O2 released.

What is photorespiration and why does it occur?

Photorespiration is a wasteful pathway that occurs when the Calvin cycle enzyme rubisco acts on oxygen rather than carbon dioxide. Crassulacean acid metabolism (CAM) plants minimize photorespiration and save water by separating these steps in time, between night and day.

What is photorespiration simple?

Photorespiration, or “‘photo-respiration'”, is a process in plant metabolism. A sugar has oxygen added to it by the enzyme (RuBisCO), instead of carbon dioxide during normal photosynthesis. Photorespiration produces no ATP and leads to a net loss of carbon and nitrogen (as ammonia), slowing plant growth.

What is the function of photorespiration?

Photorespiration helps in dissipation of energy where stomata get closed during daytime because of water stress. Photorespiration protects the plant from photoxidative damage by dissipating excess of excitation energy.

What is photorespiration according to Ncert?

Photorespiration is a process that lowers the efficiency of photosynthesis in plants. In this process RuBP reacts with oxygen to release carbon dioxide. This happens during the Calvin cycle due to the catalytic activity of RuBP oxygenase.

What is photorespiration Slideshare?

Definition of photorespiration Photorespiration: (also known as the oxidative photosynthetic carbon cycle, or C2 photosynthesis) is a process in plant metabolism which attempts to reduce the consequences of a wasteful oxygenation reaction by the enzyme RuBisCO.

What is photorespiration and why is it bad for plants?

Biochemical studies indicate that photorespiration consumes ATP and NADPH, the high-energy molecules made by the light reactions. Thus, photorespiration is a wasteful process because it prevents plants from using their ATP and NADPH to synthesize carbohydrates.

What is Photorespiration Slideshare?

What is Photorespiration Class 11?

Photorespiration is a process that lowers the efficiency of photosynthesis in plants. During photorespiration, the active site of RuBisCo combines with oxygen and yields one molecule of phosphoglycerate and one molecule of phosphoglycolate while with carbon dioxide, it yields two molecules of phosphoglycerate.

What is the difference between respiration and photorespiration?

Hint: Respiration is the process in which intake of oxygen and release of carbon dioxide happen and photorespiration is the process in which the enzyme RuBisCo oxygenates RuBP by wasting the energy produced by photosynthesis….

What is photorespiration in Class 11?

What is photorespiration Class 11?