What Are The Electron Carriers In Cellular Respiration And Photosynthesis
Enzyme activity in photosynthesis. Electron carriers are essential to both cellular respiration and photosynthesis because they can shuttle electrons throughout the cell without having them lose their potential energy.
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Cellular respiration is a set of metabolic reactions and processes that take place in the cells of organisms to convert chemical energy from oxygen molecules or nutrients into adenosine triphosphate atp and then release waste products.
What are the electron carriers in cellular respiration and photosynthesis. Both photosynthesis and cellular respiration make extensive use of harnessing the energy from flowing electrons to drive the synthesis of a product. To emphasize this point even more the equation for photosynthesis is the opposite of cellular respiration. Cellular respiration uses glucose and oxygen to produce carbon dioxide and water.
During cellular respiration nad nadh and fad fadh 2 can serve as electron carriers. In photosynthesis the main product is glucose whereas in cellular respiration it is atp adenosine triphosphate. Cellular respiration on the other hand uses glucose molecules and oxygen to produce atp molecules and carbon dioxide as the by product.
Cellular respiration can be divided into three main steps glycolysis the citric acid cycle and oxidative phosphorylation. During the first two steps molecules called electron carriers harvest. Electron carriers are important molecules in biological systems.
The earliest electron acceptor is the pheophytin and the last electron acceptor is either the photosystem or nadh h in respiration th. Photosynthesis involves the use of energy from sunlight water and carbon dioxide to produce glucose and oxygen. In photosynthesis the electron carriers are the molecules like ferodoxins plastocyanins quinones cytochromes.
They represent stored energy that can be tapped to make atp when the electrons fall down an energy gradient from nadh to o2 chemiosmosis. They accept electrons and move them as part of the electron transport chain transferring the electron and the energy it. In cellular respiration the electron transport chain occurs at the end of the process.
In photosynthesis the electron transport chain occurs at the beginning of the process. The reactions involved in respiration are catabolic reactions which break large molecules into smaller ones releasing energy because weak high energy bonds. The light reactions and the dark reactions.
Photosynthesis occurs in two stages. During photosynthesis nadp nadph serves as an electron carrier. In the light reactions the pigment chlorophyll absorbs light.
Photosynthesis is a complex series of reactions that plants and algae use to convert light energy water and carbon dioxide into glucose.
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