Follow your curiosity

What discovery has been shared with you?

FACTREE gives you something interesting to discover every day — and something worth talking about together.

Start with one fact. Explore it, go deeper, then follow whichever branch catches your imagination.

Choose subjects for a surprise

Exploring any topic

Begin your discovery

Your next discovery is one click away.

Choose one or more subjects above, or leave Any Topic selected and let curiosity decide.

Biology

The Role of Cofactors in Enzyme-Catalyzed Redox Reactions

Quick fact

NAD+ and FAD are common coenzymes that carry electrons; NAD+ accepts two electrons and one proton to become NADH, while FAD accepts two electrons and two protons to become FADH2.

Why this is interesting

You’ve seen enzymes speed up reactions, but some need an extra helper—like a battery—to make oxidation and reduction happen. What are these helpers, and how do they power the reaction?