The Complexity Within A Single Cell

Single Cell

Single-celled organisms were believed to be little more than blobs of jelly in Darwins day. So-called 'simple' life forms. But there is nothing simple about them. Even within the humblest bacterium there are myriad chemical processes taking place and even miniature machines.

One molecular machine called kinesin transports proteins from one part of the cell to another along molecular roadways called microtubules.

Kinesin is responsible for transporting molecular cargo -- including chromosomes (e.g. during cell division), neurotransmitters and other important material -- along microtubule tracks from one region of the cell to another. It is driven by ATP hydrolysis, thereby converting chemical energy into mechanical energy which it can use for movement. A kinesin molecule typically possesses two tails on one end, which attach to the cargo, in addition to two globular heads (often called "motor domains") on the other end.

Watch this incredible animation of it apparently 'walking'!

Kinesin Transport Protein
Bacterial Flagellum

Some bacteria have a miniature outboard motor called a flagellum. It has all the parts you would find on an electric motor only this one is so small you could fit 800 on the cross-section of a human hair!

The bacterial flagellum is an example of an 'irreducibly complex' machine. Take one part away and it no longer works. All parts must exist at the same time and be assembled together in the correct order. This suggests 'design' and therefore a 'designer'. If you visited Earth from another planet and discovered an electric motor, a clock, an ipod, a would never conclude that such devices fell together piece by piece by accident over a long period of time. No - you would conclude that they were designed - that there was some intelligence behind their construction.

Darwinian evolution cannot account for such devices because according to Darwin's theory changes occur slowly as a result of 'slight successive variations'. In fact Darwin said, "If it could be demonstrated that any complex organ existed, which could not possibly have been formed by numerous, successive, slight modifications, my theory would absolutely break down."  In recent years biochemistry has revealed numerous such examples of irreducibly complex systems in living things any one of which should have been sufficient to put the final nail in the coffin of Darwinian evolution and yet the theory refuses to die - why?

The Reason…

Paley’s Watch Animation