Which of the following is the final electron acceptor in oxidative phosphorylation?

Which of the following is the final electron acceptor in oxidative phosphorylation?

oxygen

What is the final electron acceptor in the electron transport chain in photosynthesis?

The final electron acceptor is NADP. In oxygenic photosynthesis, the first electron donor is water, creating oxygen as a waste product. In cyclic photophosphorylation, cytochrome b6f uses the energy of electrons from not only PSII but also PSI to create more ATP and to stop the production of NADPH.

What is the final electron acceptor in Calvin cycle?

NADPH is the reduced form of the electron acceptor NADP+. At the end of the light reactions, the energy from sunlight is transferred to NADP+, producing NADPH. This energy in NADPH is then used in the Calvin cycle.

What is the primary electron acceptor in photosynthesis?

Summary. ESR studies on light induced reactions in Chromatium D at liquid helium temperatures reveals that the primary electron acceptor of reaction center bacteriochlorophyll has a signal at approximately g 1.82. Hence, the primary electron acceptor is probably an iron-sulphur protein.

Are electrons added to CO2 during photosynthesis?

A Electrons (with accompanying protons) are added to CO2 during photosynthesis.

What are the two electron carriers in photosynthesis?

The light-dependent reactions use light energy to make two molecules needed for the next stage of photosynthesis: the energy storage molecule ATP and the reduced electron carrier NADPH. In plants, the light reactions take place in the thylakoid membranes of organelles called chloroplasts.

What is the pathway of electrons?

Electrons are transferred sequentially between the two photosystems, with photosystem I acting to generate NADPH and photosystem II acting to generate ATP. The pathway of electron flow starts at photosystem II, which is homologous to the photosynthetic reaction center of R. viridis already described.

Do plants fix carbon?

Oxygenic photosynthesis is used by the primary producers—plants, algae, and cyanobacteria. They contain the pigment chlorophyll, and use the Calvin cycle to fix carbon autotrophically. The Calvin cycle in plants accounts for the preponderance of carbon fixation on land.

Do CAM plants use Rubisco?

CAM plants temporally separate carbon fixation and the Calvin cycle. The organic acid is stored until the next day and is then broken down, releasing carbon dioxide that can be fixed by rubisco and enter the Calvin cycle to make sugars.

Do C4 plants use Rubisco?

C4 plants use this 4-carbon compound to effectively “concentrate” CO2 around rubisco, so that rubisco is less likely re react with O2. There are two important adaptations that allow C4 plants to do this: Rubisco is located in bundle sheath cells, but not in mesophyll cells.

Is spinach a C4 plant?

Peanuts, cotton, sugar beets, tobacco, spinach, soybeans, and most trees are C3 plants. The class of plants called C3-C4 intermediates and the CAM plants also have better strategies than C3 plants for the avoidance of photorespiration.