Which of the Following Processes Is Most Directly Driven by Light

question 54

Multiple Choice

Which of the following processes is most directly driven by light energy?

• A) creation of a pH gradient by pumping protons across the thylakoid membrane
• B) carbon fixation in the stroma
• C) reduction of NADP+ molecules
• D) oxidation of chlorophyll molecules

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Definitions:

Osmosis

The movement of water molecules through a semipermeable membrane from a region of lower solute concentration to a region of higher solute concentration, aiming to equalize solute concentrations on both sides.

Spongy Mesophyll

Layer of cells in a plant leaf's interior that aids in gas exchange and contains spaces between cells.

Gas Diffusion

The process by which gas molecules spread from areas of high concentration to areas of low concentration.

Photosynthesis

The process by which green plants, algae, and certain bacteria convert light energy, usually from the sun, into chemical energy stored in glucose.