Which Statement Describes the Functioning of Photosystem II

question 3

Multiple Choice

Which statement describes the functioning of photosystem II?

• A) Light energy excites electrons in the thylakoid membrane electron transport chain.
• B) Photons are passed along to a reaction-center chlorophyll.
• C) The P680 chlorophyll donates a pair of protons to NADP⁺, which is thus converted to NADPH.
• D) The electron vacancies in P680⁺ are filled by electrons derived from water.
• E) The splitting of water yields molecular carbon dioxide as a by-product.

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Definitions:

Nanometers

Nanometers, denoted as nm, are a unit of measurement equal to one billionth of a meter, often used to measure wavelengths of light or the scale of atoms and molecules.

Photoreceptors

Photoreceptors are specialized cells in the retina that convert light into electrical signals, enabling the process of vision.

Cones

Photoreceptor cells in the retina of the eye that function best in bright light and enable color vision.

Dim Light

Low-intensity lighting that is not bright enough to cause full alertness and is commonly used in settings to promote relaxation.