What is the first electron acceptor in photosynthesis?

The first electron acceptor in the case of photosystem I is A0 which is modified chlorophyll. After which it gets transferred to phylloquinone, phylloquinone then transfers it to Ferredoxin.

Is oxygen an electron acceptor in photosynthesis?

Oxygen as an alternative electron acceptor in the photosynthetic electron transport chain of C3 plants. Biochemistry (Mosc).

Who is the last electron acceptor in photosynthesis and why?

1 Answer. As last steps in photosynthesis H+ combines with NADP in the presence of electron to form NADPH. So the final electron acceptor in the light dependent reaction is NADP.

What is primary electron acceptor?

Definition. A molecule that receives or accepts electrons from another molecule during a redox reaction. Supplement. An electron acceptor is an oxidizing agent and is itself reduced during the process of redox reaction.

Does photosystem 2 contain an electron acceptor?

Photosystem II Excited P680 is a good electron donor and can transfer its excited electron to the primary electron acceptor, pheophytin. The electron will be passed on through the first leg of the photosynthetic electron transport chain in a series of redox, or electron transfer, reactions.

Is water an electron donor or acceptor in photosynthesis?

In oxygenic photosynthesis, the first electron donor is water, creating oxygen as a high-energy waste product. In anoxygenic photosynthesis various electron donors are used.

What is the last electron acceptor?

Oxygen is the final electron acceptor in the electron transport chain, which allows for oxidative phosphorylation. Without oxygen, the electrons will be backed up, eventually causing the electron transport chain to halt.

Why is O2 the final electron acceptor?

The final electron acceptor is oxygen (O2). Oxygen has a high electronegativity; thus, oxygen’s high affinity for electrons makes it an ideal acceptor for low-energy electrons. With the electrons, hydrogen is added to oxygen forming water as the final product.

Which of the following is an electron acceptor?

Examples. Examples of electron acceptors include oxygen, nitrate, iron (III), manganese (IV), sulfate, carbon dioxide, or in some microorganisms the chlorinated solvents such as tetrachloroethylene (PCE), trichloroethylene (TCE), dichloroethene (DCE), and vinyl chloride (VC).

What is the primary electron acceptor in photosystem 2?

Kinetics and mechanism of electron transfer in intact photosystem II and in the isolated reaction center: Pheophytin is the primary electron acceptor.