Which enzyme accelerates the chemical reaction that makes fireflies glow?
Chapter 1

The chemistry of the glow

Chapter 2

The language of light

Chapter 3

The darker side of the glow

Chapter 4

Fireflies in our changing world

YOUR GOAL

Master of Why fireflies light up

Ch 1 · The chemistry of the glow
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Glow Bug Jar
BETA

hank Tap the glowing bugs to discover why fireflies light up on warm summer nights.

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hank Firefly Bioluminescence

We mix luciferin with oxygen to ignite, wasting zero heat on this cold green light!

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hank Controlling the biological dimmer switch

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Controlling the biological dimmer switch

hank Fireflies control their flashes by regulating how much oxygen enters their bodies.

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The molecular recipe for firefly glow

hank A precise chemical reaction in the abdomen produces the firefly's signature green-yellow light.

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Fun Fact

Cold light efficiency: Fireflies convert 100 percent of their chemical energy into light, generating zero heat and outperforming any human-made lightbulb.

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Glossary
bioluminescence (noun)
The biochemical emission of light by a living organism. Fireflies produce this cold light when abdominal luciferin reacts with oxygen in the presence of luciferase.

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Gossip

Which glowing color is coolest?

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Quiz

What percentage of chemical energy does a firefly convert into light?

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hank The molecular recipe for firefly glow

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Quiz

What is the scientific term for living organisms producing light?

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hank The secret of highly efficient cold light

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Quiz

How do fireflies control the timing of their flashes?

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hank The warning glow of tiny larvae

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Quiz

What is a young, flightless firefly larva commonly called?

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Quiz

Which group of insects do fireflies actually belong to?

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Quiz

Which enzyme accelerates the chemical reaction that makes fireflies glow?

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Quiz

Why is a firefly's light referred to as cold light?

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Quiz

Which of these is NOT required for a firefly's light reaction?

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