What is cyclic photophosphorylation?

What is cyclic photophosphorylation?

Cyclic photophosphorylation can be defined as the synthesis of ATP coupled to electron transport activated by Photosystem I solely, and can therefore proceed in long-wave-length light (03BB 2265 700 nm). This proces is unaffected by the specific inhibitors of Photosystem II, such as CMU, DCMU and orthophenanthroline.

Why is it called cyclic photophosphorylation?

The photophosphorylation process which results in the movement of the electrons in a cyclic manner for synthesizing ATP molecules is called cyclic photophosphorylation.

What is cyclic reaction?

1. Cyclic Photophosphorylation is a process of photophosphorylation in which an electron expelled by the excited photocentre is returned back to it after passing through a series of electron carriers. ATP is formed when electrons pass Ferredoxin to PQ and from PQ to the Cytochrome system.

What is cyclic and noncyclic?

Difference Between Cyclic and Noncyclic Photophosphorylation Electrons tend to pass in a cyclic manner. Electrons tend to pass in a non–cyclic manner. Electrons return back to Photosystem I. Electrons from Photosystem I am accepted by NADP and it does not return back.

What are cyclic and noncyclic processes?

A cyclic process consists of a series of changes which return the system back to its initial state. In non – cyclic process the series of changes involved do not return the system back to its initial state.

What is cyclic and non cyclic process?

What is the difference between cyclic and noncyclic photosynthesis?

Cyclic photophosphorylation refers to the process which produces ATP during the cyclic electron transport chain of light dependent photosynthesis. Noncyclic photophosphorylation refers to the process which produces ATP from noncyclic electron transport chain in light reactions of photosynthesis.

What is meant by cyclic process?

What Is Cyclic Process? The process in which the initial and final state is the same is known as a cyclic process. It is a sequence of processes that leave the system in the same state in which it started. When a system undergoes a cyclic process, its initial and final internal energies are equal.

What is cyclic and 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.

What is cyclic process in thermodynamic?

In a cyclic process, the system starts and returns to the same thermodynamic state. A cyclic process is the underlying principle for an engine. If the cycle goes counterclockwise, work is done on the system every cycle. An example of such a system is a refrigerator or air conditioner.

What is cyclic and non-cyclic process?

What are the cyclic and non-cyclic pathways in photosynthesis?

Type of photosynthesis: Cyclic photophosphorylation occurs during anoxygenic photosynthesis, while noncyclic photophosphorylation occurs in oxygenic photosynthesis. ATP synthesis: ATP synthesis during the cyclic electron flow of anoxygenic photosynthesis is known as cyclic photophosphorylation.

What is the function of photosystem 1 and 2?

Photosystem I (PS I) and photosystem II (PS II) are two multi-subunit membrane-protein complexes involved in oxygenic photosynthesis. Chlorophyll is the pigment involved in capturing light energy. PS 1 contains chlorophyll B, chlorophyll A-670, Chlorophyll A-680, chlorophyll A-695, chlorophyll A-700 and carotenoids.

What is cyclic electron pathway?

Define “Cyclic Electron Flow”. The photosynthetic pathway in which ATP is produced through cyclic flow of electrons. Electrons are excited by light energy at the photosynthetic reaction center into a highly negative stage, then flow through a photosynthetic electron transport chain back to the reaction center, generating ATP in the process.

What is a cyclic pathway?

NADPH and ATP produced by noncyclic flow electrons in thylakoid membrane are used by enzymes in stroma during light-independent reactions. C. Cyclic Electron Pathway. 1. The cyclic electron pathway begins when the PS I antenna complex absorbs solar energy.