distuguish between respiration and photorespiration?
Answers
Answer:
Photorespiration is a type of respiration process occurs in plants in presence of light and at higher concentrations of oxygen. The photorespiration is also called C2 cycle or glycolate metabolism since the first stable product of the photorespiration reaction is a 2 carbon compound called glycolate.
The respiration (also called normal respiration or dark respiration) is a metabolic pathway which releases energy-rich molecules by the breakdown of sugar molecules such as glucose. Even though the photorespiration and the normal respiration occur in the presence of oxygen, the two pathways are independent process and show considerable differences. The photorespiration is not universally present in all plants; rather it usually occurs in C3 plants. The process of photorespiration is essentially absent in C4 plants.
The present post discusses the similarities and differences between photorespiration and normal respiration with a comparison table.
Learn more: C3 vs C4 Cycle of Photosynthesis
Similarities between Photorespiration and Respiration
Ø Both photorespiration and respiration are catabolic processes.
Ø Both photorespiration and respiration occurs in green plants.
Ø Both uses oxygen.
Ø Both processes produce CO2 in the end.
Ø Both are enzymatic reactions involves many enzymes.
Ø Both processes use ATP molecules.
Ø Both processes need mitochondria.
Explanation:
There are many differences between respiration and photosynthesis. The principal difference, however, between photosynthesis and respiration is that photosynthesis utilizes carbon dioxide and water in the presence of light to produce glucose and oxygen, whereas respiration uses oxygen and glucose to power the activities of the cell. Respiration then releases carbon dioxide and water as a byproduct.