stackyFACTS
Health

Hemoglobin carries four oxygen molecules at once

HERE’S THE INTERESTING PART

Your red blood cells are essentially microscopic carpools that strictly enforce a four-passenger limit. Every single hemoglobin protein physically binds exactly four molecules of oxygen, shuttling them through your vessels like an extremely rigid public transit system.

Hemoglobin carries four oxygen molecules at once
STACKY / Health
One discovery leads to another.

Keep exploring facts in this topic.

Health →
STACKY FOR IPHONE

A bigger world.
One discovery
at a time.

Keep discovering with Stacky. Interesting facts in an app that is always within reach.

Download on the App Store
ONE MORE DISCOVERY?

Keep exploring

All in this topic →
StackyMore discoveries in the app
Download on the App Store