In photosynthesis, high energy electrons hitch a ride on NADPH.

use sunlight as a source of energy and through the process of photosynthesis, reduce carbon dioxide to form carbohydrates such as glucose. The radient energy is converted to the chemical bond energy within glucose and other organic molecules.

Fig. 3: Electron Transport and Chemiosmosis during Photosynthesis

In photosynthesis, electrons go down the chain and produce ATP between PHAEO and Photosystem I.

Oxygen Metabolism and Electron Transport in Photosynthesis

1. As photons are absorbed by pigment molecules in the antenna complexes of Photosystem II, excited electrons from the reaction center are picked up by the primary electron acceptor of the Photosystem II electron transport chain. During this process, Photosystem II splits molecules of H2O into 1/2 O2, 2H+, and 2 electrons. These electrons continuously replace the electrons being lost by the P680 chlorophyll a molecules in the reaction centers of the Photosystem II antenna complexes.

Photosynthesis: The Electron Transport System of …

1. As photons are absorbed by pigment molecules in the antenna complexes of Photosystem II, excited electrons from the reaction center are picked up by the primary electron acceptor of the Photosystem II electron transport chain. During this process, Photosystem II splits molecules of H2O into 1/2 O2, 2H+, and 2 electrons. These electrons continuously replace the electrons being lost by the P680 chlorophyll a molecules in the reaction centers of the Photosystem II antenna complexes (see Fig. 2).


Photosynthetic control of electron transport is a fundamental ..

1. As photons are absorbed by pigment molecules in the antenna complexes of Photosystem II, excited electrons from the reaction center are picked up by the primary electron acceptor of the Photosystem II electron transport chain. During this process, Photosystem II splits molecules of H2O into 1/2 O2, 2H+, and 2 electrons. These electrons continuously replace the electrons being lost by the P680 chlorophyll a molecules in the reaction centers of the Photosystem II antenna complexes.

LabBench Activity Plant Pigments and Photosynthesis

Each antenna complex is able to trap light and transfer energy to a complex of chlorophyll molecules and proteins called the reaction center. Photons are absorbed by chlorophyll and accessory pigments and that energy is eventually transfered to the reaction center where it is absorbed by an excitable electron moving it to a higher energy level. Here the electron can be accepted by an electron acceptor molecule of an electron transport chain where the light energy is converted to chemical energy by chemiosmosis.

photosynthesis is water split and oxygen ..

The most common light-dependent reaction in photosynthesis is called noncyclic photophosphorylation. Noncyclic photophosphorylation involves both Photosystem I and Photosystem II and produces ATP and NADPH. During noncyclic photophosphorylation, the generation of ATP is coupled to a one-way flow of electrons from H2O to NADP+.

Water How is oxygen generated in oxygenic photosynthesis?

The result of two light reactions is a total of six oxygen molecules (6 O2) released into the air as byproducts and 12 NADPH2 (24 H) carried over to the dark reaction of photosynthesis....

as it is a reactant in respiration and a product in photosynthesis

This final complex in the electron transport chain accomplishes the final transfer of the electrons to oxygen and pumps two protons across the membrane.