How is cyclic electron flow different from non-cyclic electron flow in terms of which Photosystem s are involved and what is produced?
During cyclic photophosphorylation, high energy electrons travel through electron acceptors in cyclic movements and release energy to produce ATP. Both photosystems are involved in noncyclic photophosphorylation while only one photosystem (PS I) is involved in cyclic photophosphorylation.
What is the main difference between cyclic and noncyclic photophosphorylation?
Photophosphorylation is divided into two types, viz, cyclic photophosphorylation and non-cyclic photophosphorylation….Cyclic vs Non-cyclic Photophosphorylation.
| Cyclic Photophosphorylation | Noncyclic Photophosphorylation |
|---|---|
| Does not occurs | Occurs |
| Product | |
| ATP | Reduced coenzymes and ATP |
| Electron acceptor |
How is cyclic electron flow different?
While linear electron transport generates both ATP and NADPH, cyclic electron transport around photosystem I (PS I) is exclusively involved in ATP synthesis without the accumulation of NADPH.
What are the similarities between cyclic and non cyclic electron transport?
Similarities between cyclic and noncyclic phosphorylation Ø Both cyclic and noncyclic photophosphorylations are light reactions. Ø Both are dependent on light. Ø Both are electron transport systems. Ø Both pathways produce assimilatory powers.
What happens in noncyclic electron flow?
In a process called non-cyclic photophosphorylation (the “standard” form of the light-dependent reactions), electrons are removed from water and passed through PSII and PSI before ending up in NADPH. This process requires light to be absorbed twice, once in each photosystem, and it makes ATP .
What are the similarities between cyclic and non-cyclic electron transport?
What is the cyclic electron flow?
In cyclic electron flow (CEF), electrons are recycled around photosystem I. As a result, a transthylakoid proton gradient (ΔpH) is generated, leading to the production of ATP without concomitant production of NADPH, thus increasing the ATP/NADPH ratio within the chloroplast.
What is noncyclic electron flow?
In photosynthesis: The pathway of electrons. …and intermediate carriers is called noncyclic electron flow. Alternatively, electrons may be transferred only by light reaction I, in which case they are recycled from ferredoxin back to the intermediate carriers. This process is called cyclic electron flow.
What are the differences between linear non cyclic electron flow and cyclic electron flow?
In linear electron flow (unbroken arrows) energy from absorbed photons is used to oxidise water on the luminal face of photosystem II (PS II). In cyclic electron flow, energy from absorbed photons causes the oxidation of the reaction centre (P700) in PS I.
What is cyclic and noncyclic electron flow?
What is cyclic electron flow?
What is a non-cyclic electron flow?
What does the cyclic electron flow generate?
In higher plants, the generation of proton gradient across the thylakoid membrane (ΔpH) through cyclic electron flow (CEF) has mainly two functions: (1) to generate ATP and balance the ATP/NADPH energy budget, and (2) to protect photosystems I and II against photoinhibition.
Does cyclic electron flow use light?
Alternatively, electrons may be transferred only by light reaction I , in which case they are recycled from ferredoxin back to the intermediate carriers. This process is called cyclic electron flow. Many lines of evidence support the concept of electron flow via two light reactions.
Where does cyclic electron flow occur?
In cyclic electron flow, the electron originates in a pigment complex called photosystem I, passes from the primary acceptor to ferredoxin, then to a complex of two cytochromes (similar to those found in mitochondria), and then to plastocyanin before returning to chlorophyll.
What is cyclic pathway?
Cyclic pathways follow reactions in a closed loop; the intermidiates (metabolites, middle-step products) are constantly regenerated. The_Alchemist’s metabolic pathway above is a cyclic pathway. Spiral pathways use the same enzymes to increase or decrease the size of a molecule.