The final chemotaxis lesson closes the deterministic gradient-to-motion ledger. Exact arithmetic here means exact results for the stated model inputs; measured inputs still carry uncertainty and significant-figure limits.

highlighted = computed this step

Use the checked net displacement and time

The connected drift ledger has displacement 24 m and total time 24 s.

24 m24 s24\ \text{m}\quad24\ \text{s}
Accepted chemotaxis auditThe final audit accepts only a connected gradient-to-drift ledger.1gradient sourcemidpoint predictionlow occupancyhigh occupancycontrast equals biasdrift speedaccepted

Accept only the connected chemotaxis ledger

The audit accepts because gradient, occupancy, contrast, bias, and drift all cite matching checked sources.

2 per m141 m/s2\ \text{per m}\quad\frac{1}{4}\quad1\ \text{m/s}
Accepted chemotaxis auditThe final audit accepts only a connected gradient-to-drift ledger.1gradient sourcemidpoint predictionlow occupancyhigh occupancycontrast equals biasdrift speedaccepted