Cyclic and non cyclic

Which molecule transfers electrons from photosystem I (PSI) to the electron transport chain in cyclic photophosphorylation?

• Ferredoxin (Fd)

• Plastoquinone (PQ)

• NADP⁺

• Oxygen (O₂)

Which photosystem is primarily involved in cyclic photophosphorylation?

• Photosystem I (PSI)

• Photosystem II (PSII)

• Both PSI and PSII

• Neither PSI nor PSII

What drives ATP synthesis during photophosphorylation?

• Movement of electrons

• Proton gradient across the thylakoid

• Carbon fixation

• Oxygen evolution

Which of the following is NOT a product of non-cyclic photophosphorylation?

• ATP

• NADPH

• Oxygen

• Carbon dioxide

Tags

NGSS.HS-LS1-5

In which pathway of photophosphorylation do electrons flow linearly from water to NADP⁺?

• Cyclic photophosphorylation

• Non-cyclic photophosphorylation

What is a primary difference between cyclic and non-cyclic photophosphorylation?

• The direction of electron flow

• Production of carbon dioxide

• Photolysis of water