Is this good for educators?

Yes — this version of "O₂–Hemoglobin Curve for a gene expression" is framed for educators teaching it to a class. Drop a live demo into a lecture or assign it as a shareable link — no lab installs.

Do I need to install anything?

No. It runs in any modern browser, free, with no account required.

For Educators · O₂–Hemoglobin Curve

O₂–Hemoglobin Curve for a gene expression

Built for educators teaching it to a class. Drop a live demo into a lecture or assign it as a shareable link — no lab installs. Simulate a gene expression live below — adjust the inputs and watch it respond, right in your browser.

Oxygen–Hemoglobin DissociationLive

how blood loads and unloads O₂

Controls

Presets

P50 (mmHg)

Hill coefficient

pO₂ (mmHg)

Hemoglobin's S-shaped curve lets blood grab oxygen in the lungs and release it in tissues. The cooperative binding (Hill coefficient > 1) makes the curve steep, so a small pressure drop unloads a lot of O₂. A right shift (higher P50) releases even more where it's needed. Educational tool, not medical advice.

▶ Run in Python

Data Inspector

Saturation here75.1%

At lungs (100 mmHg)97%

At tissue (40 mmHg)75%

Governing equation

S = \frac{( p O _{2} ) ^{2.7}}{26. 6 ^{2.7} + ( p O _{2} ) ^{2.7}} = 0.75

Reading this result: Cooperative binding (Hill 2.7) gives the S-shape: the swing from 40 to 100 mmHg moves saturation from 75% to 97%, which is how tissues get their O₂.

Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.

or unlock everything with Pro →

Also for:Students Researchers Engineers Hobbyists & Makers K-12 Students First Responders General version →

More with O₂–Hemoglobin Curve

O₂–Hemoglobin Curve for a bacterial growth O₂–Hemoglobin Curve for a predator-prey cycle O₂–Hemoglobin Curve for a neuron firing O₂–Hemoglobin Curve for a heartbeat O₂–Hemoglobin Curve for a virus spread O₂–Hemoglobin Curve for a protein fold O₂–Hemoglobin Curve for a muscle contraction O₂–Hemoglobin Curve for a blood flow

Frequently asked questions

Is this good for educators?: Yes — this version of "O₂–Hemoglobin Curve for a gene expression" is framed for educators teaching it to a class. Drop a live demo into a lecture or assign it as a shareable link — no lab installs.
Do I need to install anything?: No. It runs in any modern browser, free, with no account required.