# Flagellocyte

The Flagellocyte is a cell type unlocked after completing the challenge "Macrophages".

## Description

This cell has a Flagellum at the rear that it uses to propel itself.

The Flagellocyte is the main way of cell propulsion, but in dry substrates or substrates with intense gravity it becomes highly inefficient or completely useless. It has no means of feeding itself, so is almost exclusively used attached to other cells, although it can be used alone as a color signal or for forms of alimentation in certain scenarios.

Its Swim force setting ($f_{swim}$) can be changed from the default 0.45 from 0 to 1, increasing and decreasing the force (push) that the cell has. This swim force can also can be programmed with Signal Substance Dependence.

It will immediately die upon birth if its tail is obstructed.

##### Energy Usage

It has a default energy usage cofficient of 1.0 ng/h.

Additionally it uses $f_{(swim)}\times(0.08\,ng/h\quad + f_{(swim)}\times0.409756\,ng/h)$, where $f_{(swim)}$ is the swim force setting.

The swim force is in turn given by $F_{(swim)}=f_{(swim)}\times3.8580247\times10^{-21}N$

In simplest terms, the cell consumes more energy the faster it swims.

## Trivia

• In the current version (74), there is a way to make a Flagellocyte have its tail obstructed without it dying instantly by having a Stemocyte differentiate into a Flagellocyte.