A teaching model with made-up relative units, not real doses. Binding is shown as a snapshot that keeps shuffling, because real drug molecules bind and let go many times a second. Cells often have spare receptors, so the response can be bigger than the share of receptors filled.
Sixty made-up people with normal spread in how sensitive they are. Doses are relative teaching units. In this model the window is the dose range where at least 80% are helped and no more than 5% have a toxic effect.
Wrong answers are fine here. Each one tells you why.
Your job
Drag a card onto a box, or tap a card and then tap the box's name. Cards are buttons, so Tab and Enter work too.