Phycobilisomes

Definition

Phycobilisomes are light-harvesting complexes found in cyanobacteria and red algae. They capture light energy and transfer it to chlorophyll for photosynthesis.

5 Must Know Facts For Your Next Test

1. Phycobilisomes are composed of phycobiliproteins, which include phycocyanin, allophycocyanin, and phycoerythrin.
2. They are attached to the thylakoid membrane in cyanobacteria and red algae cells.
3. Phycobilisomes allow these organisms to efficiently utilize light wavelengths that chlorophyll alone cannot absorb well.
4. The structure of phycobilisomes is highly ordered and typically consists of a core with radiating rods.
5. These complexes play a crucial role in the ecological success of cyanobacteria in diverse environments.

Review Questions

Related terms

Thylakoid Membrane: A membrane-bound compartment inside chloroplasts where photosynthesis takes place.

Phycocyanin:

A blue pigment found in cyanobacteria that is part of the phycobiliprotein complex.

Chlorophyll:

A green pigment responsible for the absorption of light to provide energy for photosynthesis.