Synthesis of ATP during the light reactions?

Answer 1

Hydrogen ions, flowing from the thylakoid lumen to the stroma in the chloroplast, have to move through a protein called the ATP synthase. Each time 3 protons moves through it, an ADP is phosphorylated into ATP. The protons move through the protein because a gradient is built up and there is a high concentration of protons in the lumen compared to that of the stroma. These protons move freely down their chemical gradient by chemiosmosis, and the ATP synthase takes advantage of this process by using their energy to power itself.

Answer 2

In plants, ATP is synthesized in thylakoid membrane of the chloroplast during the light-dependent reactions of photosynthesis in a process called photophosphorylation. Here, light energy is used to pump protons across the chloroplast membrane. This produces a proton-motive force and this drives the ATP synthase, exactly as in oxidative phosphorylation. Some of the ATP produced in the chloroplasts is consumed in the Calvin cycle, which produces triose sugars

Answer 3

ATP is produced during the light reaction part of photosynthesis. Photosynthesis occurs in two stages: a light and dark reaction. ATP is produced during noncyclic flow in the light reaction and is also produced in the cyclic flow. Since more ATP is used up than NADPH in the Calvin cycle (or dark reaction), the cyclic electron flow produces more ATP molecules.

Answer 4

Electrons are excited in the chlorophyl - photosystem 2- and are transported through the electron transport chain to photosystem one, where the energy is used to create a concentration gradient between the protons in the stroma and the proton concentration in the thylakoid... there is an increased conc. in the thylakoid and therefore ATP synthase is a channel protein that the Hydrogen ions go through to create a balance in the proton concentration gradient... the energy from the protons/electrons are used to add a phosphate molecule to ADP to produce ATP :) brap brap brap

Answer 5

During the light reactions of photosynthesis, ATP is synthesized through chemiosmosis. This process involves the generation of a proton gradient across the thylakoid membrane, which drives the ATP synthase enzyme to produce ATP from ADP and inorganic phosphate. Light energy is used to split water molecules, releasing electrons that are used to pump protons across the membrane and create the necessary gradient for ATP synthesis.

Answer 6

Chemiosmosis.

Answer 7

chemiosmosis