What energy is produced by photosystem 2?

What energy is produced by photosystem 2?

Photosystem II is the first membrane protein complex in oxygenic photosynthetic organisms in nature. It produces atmospheric oxygen to catalyze the photo-oxidation of water by using light energy. It oxidizes two molecules of water into one molecule of molecular oxygen.

What does the energy captured by photosystem II cause?

Energetic Electrons Photosystem II is the first link in the chain of photosynthesis. It captures photons and uses the energy to extract electrons from water molecules. As these electrons flow down the chain, they are used to pump hydrogen ions across the membrane, providing even more power for ATP synthesis.

What is the main output in photosystem II?

The output of photosystem II is oxygen and ATP. It occurs in the inner surface of the grana of the thylakoid membrane.

What is produced in photosystem 2 quizlet?

Photosystem II produces a proton gradient that drives the synthesis of ATP. Photosystem I yields reducing power in the form of NADPH. Although several groups of bacteria have just one of the two photosystems, the cyanobacteria, algae, and plants have both.

How does photosystem 2 generate ATP?

Electrons are transferred sequentially between the two photosystems, with photosystem I acting to generate NADPH and photosystem II acting to generate ATP. Electron transport through photosystem II is thus coupled to establishment of a proton gradient, which drives the chemiosmotic synthesis of ATP.

Where do electrons get their energy in photosystem 2?

In (a) photosystem II, the electron comes from the splitting of water, which releases oxygen as a waste product.

What happens in the photosystem 2 protein when it is hit by a photon of light?

A photon strikes photosystem II to initiate photosynthesis. Energy travels through the electron transport chain, which pumps hydrogen ions into the thylakoid space. This forms an electrochemical gradient.

What is the function of photosystem 2?

Photosystem II (PSII) is a multi-component pigment-protein complex that is responsible for water splitting, oxygen evolution, and plastoquinone reduction.

What is the energy of a photon first used to do in photosynthesis?

A photon of light hits chlorophyll, causing an electron to be energized. The free electron travels through the electron transport chain, and the energy of the electron is used to pump hydrogen ions into the thylakoid space, transferring the energy into the electrochemical gradient.

What kind of energy is released by photosystem I?

High-energy electrons, which are released as photosystem I absorbs light energy, are used to drive the synthesis of nicotine adenine dinucleotide phosphate (NADPH). Photosystem I obtains replacement electrons from the electron transport chain.

How does the light reaction occur in photosystem II?

Photosystem II. The light reaction occurs in two photosystems (units of chlorophyll molecules). Light energy (indicated by wavy arrows) absorbed by photosystem II causes the formation of high-energy electrons, which are transferred along a series of acceptor molecules in an electron transport chain to photosystem I.

Where does the high energy electron go in photosynthesis?

The high-energy electron is passed to an acceptor molecule and replaced with an electron from water. This splitting of water releases the we breathe. ATP synthesis. The high-energy electron travels down an electron transport chain, losing energy as it goes.

How is molecular oxygen released in photosystem II?

Photosystem II. The oxygen atoms combine to form molecular oxygen (O2), which is released into the atmosphere. The hydrogen ions are released into the lumen. Additional hydrogen ions are pumped into the lumen by electron acceptor molecules. This creates a high concentration of ions inside the lumen.