Photosynthesis and the Electromagnetic Spectrum

These flashcards cover key concepts in photosynthesis, including the electromagnetic spectrum, pigments, and the processes involved in energy transformation.

Electromagnetic Spectrum

The range of all types of electromagnetic radiation, extending from gamma rays to radio waves.

Visible Light

The part of the electromagnetic spectrum that can be seen by the human eye, composed of different colors each with varying wavelengths and energy.

Photosynthetic Pigments

Molecules like chlorophyll a, chlorophyll b, and carotenoids that absorb specific wavelengths of visible light to harness solar energy.

Chlorophyll a

A primary pigment in photosynthesis that absorbs blue-violet and red light.

Chlorophyll b

An accessory pigment that expands the light absorption range of photosynthesis by capturing additional wavelengths.

Carotenoids

Accessory pigments that absorb light energy and extend the range of wavelengths that photosynthesis can utilize.

ATP (Adenosine Triphosphate)

A high-energy molecule produced during photosynthesis that acts as an energy currency in cells.

NADPH

A carrier molecule that transfers high-energy electrons, produced from NADP+ combining with energized electrons and H+.

Photosystem II

The complex in photosynthesis where water is split, releasing oxygen and energizing electrons for the electron transport chain.

Electron Transport Chain

A series of proteins in the thylakoid membrane that transfer energized electrons and create a proton gradient for ATP production.