Electron Transport Chain in Photosynthesis

Through the use of oxygen-18 (heavy oxygen), scientists have found that the oxygen released during photosynthesis comes from molecules of:

Which one of the following categories of organisms do not evolve oxygen during photosynthesis?

Hill reaction occurs in

Which of the following is/are produced by a plant during photosynthesis with far-red light? 

Which of the following combinations is required for chemiosmosis?

A lower value of pH is maintained in the lumen of thylakoid of chloroplasts is due to:

I. Movement of protons across the membrane through CF₀ channel.

II. Release of protons by proton carrier into the lumen.

III. Oxidation of water molecule.

IV. Reduction of NADP⁺ towards stroma.

Why is NADPH not formed during cyclic photophosphorylation?

The movement of electrons from ${\mathrm{P}}_{680}$ to pheophytin and pheophytin to ${\mathrm{P}}_{700}$ are respectively:

How many pairs of protons will be pushed to the outer chamber of mitochondria if 6 NADH and 2 FADH2 are oxidized in ETS?

Unidirectional flow of electrons in photophosphorylation takes place in

Do both cyclic and non-cyclic photophosphorylation occur when light less than 680 nm comes?

We can observe the $\mathrm{Z} -$ scheme during movement of electrons in –

Which of the following chlorophyll type ejects the electron during photophosphorylation?

Identify A to D in the given figure.

Chemiosmosis requires

During non-cyclic photophosphorylation, in which of the following, $4{\mathrm{e}}^{-}$ produced through photolysis (splitting of water) will enter:

Splitting of water during photochemical reactions is associated with:

Cyclic photophosphorylation releases:

The protons are accumulated in the ….. during photophosphorylation process.

Identify the labels, $A,B$ and $C$ from the figure provided and select the correct option: