What is the role of water in non-cyclic electron flow?

What is the role of water in non-cyclic electron flow?

What is the purpose of water in the noncyclic flow of electrons in photosynthesis? water splits, thus giving electrons to P680 and having 2 hydrogen ions and one oxygen atom. This all releases O2.

Does cyclic photophosphorylation produce water?

Both ATP and NADPH molecules get formed. Water is not needed in the cyclic photophosphorylation process.

Does non-cyclic require the splitting of water?

So in non-cyclic photophosphorylation, you make oxygen, from splitting the water molecule, you make ATP using the H+ ions and you make NADPH. In cyclic photophosphorylation, you only use photosystem I. There is no splitting of water – the electrons only come from the light harvesting complex.

How many H ions are formed from for water molecule during non-cyclic photophosphorylation?

Non-cyclic photophosphorylation leads to a net production of ½ O2, ATP, and NADPH and H+ (proton) with the consumption of solar photons and water. Therefore, if 2 molecules of water produces 4 protons, then 12 molecules of water will produce 24 protons.

How is water important to non-cyclic photosynthesis?

Water acts as a reducing agent by providing H+ ions that convert NADP to NADPH. Since NADPH is an important reducing agent present in chloroplasts, its production results in a deficit of electrons, resulting from oxidation of chlorophyll.

What is water used for in noncyclic electron transport during photosynthesis?

The pathway of electrons in photosynthesis is shown with red arrows in the diagram below. Another light reaction at photosystem I activates electrons for transfer to ferredoxin, and finally to NADP+ . The overall equation for non-cyclic electron transport. Water is oxidized to oxygen, releasing protons.

Which one occurs during both cyclic and non cyclic photophosphorylation?

Question : Which one occurs both during cyclic and non-cyclic modes of photophosphorylation

Question	Which one occurs both during cyclic and non-cyclic modes of photophosphorylation
Chapter Name	Photosynthesis In Higherf Plants
Subject	Biology (more Questions)
Class	12th
Type of Answer	Video, Text & Image

Where does non cyclic photophosphorylation occurs?

granal thylakoid
Complete answer: Non-cyclic phosphorylation takes place in the granal thylakoid region of chloroplast. Two photosystems i.e. Photosystem-I and Photosystem-II is involved in the process of non-cyclic phosphorylation.

Is water split in non-cyclic photophosphorylation?

Being a light reaction, non-cyclic photophosphorylation occurs in the thylakoid membrane. First, a water molecule is broken down into 2H+ + 1/2 O2 + 2e− by a process called photolysis (or light-splitting).

Where does cyclic and non-cyclic photophosphorylation occur?

Complete answer: Non-cyclic phosphorylation takes place in the granal thylakoid region of chloroplast. Two photosystems i.e. Photosystem-I and Photosystem-II is involved in the process of non-cyclic phosphorylation.

Where does non-cyclic Photophosphorylation occur?

Complete answer: Non-cyclic phosphorylation takes place in the granal thylakoid region of chloroplast. Two photosystems i.e. Photosystem-I and Photosystem-II is involved in the process of non-cyclic phosphorylation. At first, Photosystem-II and then Photosystem-I comes and thus works like a series.

What is cyclic reaction?

In organic chemistry, a pericyclic reaction is the type of organic reaction wherein the transition state of the molecule has a cyclic geometry, the reaction progresses in a concerted fashion, and the bond orbitals involved in the reaction overlap in a continuous cycle at the transition state.