Where is ATP produced in non-cyclic photophosphorylation?

In non-cyclic photophosphorylation the photolysis of water produces electrons that generate a proton motive force which is used to produce ATP, the electrons finally being used to reduce NADP+ to NADPH.

What is Noncyclic photophosphorylation?

non-cyclic photophosphorylation The light-requiring part of photosynthesis in higher plants, in which an electron donor is required, and oxygen is produced as a waste product. It consists of two photoreactions, resulting in the synthesis of ATP and NADPH 2.

Why is cyclic photophosphorylation called so?

The cyclic photophosphorylation is called so because it is the process of phosphorylation occurring in the presence of light, it is called cyclic photophosphorylation because in this process the electron is liberated from photosystem I and then end up in the same photosystem I.

How many ATP are produced in non-cyclic photophosphorylation?

Non-cyclic photophosphorylation produces 1 ATP and 2 NADPH2 molecules.

What is the difference between cyclic and noncyclic phosphorylation?

Difference Between Cyclic and Noncyclic Photophosphorylation Photosystem I is involved in the cyclic photophosphorylation process. In the cyclic photophosphorylation, P700 is known to be the active reaction centre. In the non-cyclic photophosphorylation, P680 is known to be the active reaction centre.

What is the difference between cyclic and non-cyclic photophosphorylation?

The difference between cyclic and noncyclic photophosphorylation is mainly due to the following factors: Type of photosynthesis: Cyclic photophosphorylation occurs during anoxygenic photosynthesis, while noncyclic photophosphorylation occurs in oxygenic photosynthesis.

Is ATP produced in cyclic photophosphorylation?

Cyclic photophosphorylation involves only Photosystem I and generates ATP but not NADPH.

How does cyclic differ from non-cyclic photophosphorylation?

In the cyclic photophosphorylation, only ATP is produced, whereas, in the non-cyclic photophosphorylation both NADPH and ATP are produced. In cyclic photophosphorylation, the electrons get expelled by photosystem I and they return to the system.

Why ATP formation during glycolysis is called substrate level phosphorylation?

ATP is the molecule that supplies energy for metabolic processes within your cells. Substrate-level phosphorylation, which is a process of forming ATP by the physical addition of a phosphate group to ADP can take place in the cytoplasm during glycolysis or inside the mitochondrial matrix during the Krebs cycle.

What is produced in Noncyclic phosphorylation and not in cyclic?

How many ATP are formed in cyclic phosphorylation?

The number of ATP molecules formed during cyclic phosphorylation are Six.

Which one occurs during both cyclic and non-cyclic photophosphorylation?

ATP formation
Thus, ATP formation is the only process that occurs in both cyclic and non-cyclic photophosphorylation.

What is the only source of ATP in photosynthesis?

Some photosynthesis bacteria have cyclic photophosphorylation as the only source of ATP. As will be seen cyclic photophosphorylation is carried out by photosystem I only. Details are clear in the following figure (Fig. 13.24).

Is non cyclic photophosphorylation a light reaction?

Non-Cyclic Photophosphorylation The other pathway of light reaction is, non-cyclic photophosphorylation, is a two-stage process comprising two different chlorophyll photosystems. Being a light reaction, non-cyclic photophosphorylation happens in the thylakoid membrane.

What is the difference between ATP and NADPH formation?

Obviously, NADPH formation is a function of PSI whereas ATP formation requires both PSI and PSII. Here no ‘outside’ electron donor is needed. Chlorophyll absorbs photon of light of enough energy and an electron with high energy state (e –) is produced which reduces ferredoxin and the cytochrome system (cyt. b 6 ), respectively.

What is the difference between photolysis and photophosphorylation?

Generally, in photosynthesis this involves photolysis, or photodissociation, of water and a constant unidirectional flow of electrons from water to photosystem II. In photophosphorylation process, light energy is used to make a high-energy electron donor and a lower-energy electron acceptor.