What is Photorespiration cycle?

Photorespiration (also known as the oxidative photosynthetic carbon cycle, or C2 photosynthesis) refers to a process in plant metabolism where the enzyme RuBisCO oxygenates RuBP, wasting some of the energy produced by photosynthesis.

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 Photorespiration and where does it occur?

photorespiration A light-activated type of respiration that occurs in the chloroplasts of many plants. It is a process that is wasteful of both carbon dioxide and energy, and those plants in which it occurs have high carbon dioxide compensation points. …

What is photorespiration and why is it bad?

Photorespiration wastes energy and decreases sugar synthesis, so when rubisco initiates this pathway, it’s committing a serious molecular faux pas.

Which cycle is operate in photorespiration?

the Calvin cycle
Photorespiration in Green Leaves In the Calvin cycle of photosynthesis, the bifunctional chloroplast enzyme ribulose-1,5-bisphosphate carboxylase/oxygenase (RubisCO) uses its carboxylase activity to productively attach CO2 to the 5-carbon substrate, ribulose-1,5-bisphosphate.

What is photorespiration explain it with diagrammatic representation?

This is the wasteful pathway which results in the loss of the carbon dioxide which was fixed. Photorespiration results in the light-dependent uptake of oxygen and release of carbon dioxide and is associated with the synthesis and metabolism of a small molecule called as glycolate.

What is photorespiration and why is it a problem?

In cellular respiration it is a positive term, a process vital to life. But photorespiration is an entirely negative term because it represents a severe loss to the process of using light energy in photosynthetic organisms to fix carbon for subsequent carbohydrate synthesis.

Is photorespiration good or bad?

Photorespiration is bad for C3 plants because this process causes a decrease in the productivity of a plant, hence it is also called the wasteful process.