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How do algae produce light?

Published in Bioluminescence 1 min read

Algae produce light, a phenomenon known as bioluminescence, through a chemical reaction involving luciferin, luciferase, and oxygen.

Here's a breakdown of the process:

  • The Players: The key components are luciferin (a light-emitting molecule), luciferase (an enzyme that catalyzes the reaction), and oxygen.
  • The Reaction: When the algae are disturbed (e.g., by waves or movement in the water), oxygen reacts with luciferin.
  • Luciferase's Role: Luciferase acts as a catalyst, accelerating the oxidation of luciferin. This process releases energy in the form of light.
  • No Heat: Importantly, this light production is efficient, generating light without producing significant heat. This is why it's called "cold light."

In essence, the mechanical disturbance triggers a chemical reaction that results in the emission of light. This bioluminescence serves various ecological functions for the algae.

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