Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 exam•Written by the Fiveable Content Team • Last updated September 2025
Definition
Chlorophyll B is a type of chlorophyll pigment found in plants and algae. It absorbs light energy and transfers it to chlorophyll A during photosynthesis.
Related terms
Photosystem: In photosynthesis, a photosystem is a complex of proteins and pigments that captures light energy. Chlorophyll B is part of the photosystem along with other pigments.
Pigment: A pigment is any molecule that can absorb certain wavelengths of light. Chlorophyll B is one type of pigment involved in capturing light energy for photosynthesis.
Absorption Spectrum: The absorption spectrum shows which wavelengths of light are absorbed by a particular pigment or molecule. Chlorophyll B has its own unique absorption spectrum, different from other pigments like chlorophyll A.