The Engine Inside Every Living Cell
What actually provides the energy for everything that happens inside a living body? Not coffee, though it may feel that way in the morning. The answer lies inside every cell, in a molecule called ATP — adenosine triphosphate — universally described as the energy currency of life. Every nerve impulse, every muscle contraction, every act of DNA synthesis, every maintenance of a cell’s own internal architecture depends on a constant and sufficient supply of ATP. Cells cannot store large reserves of free energy, since that would produce destructive heat; ATP solves this by packaging energy in small, releasable units precisely where and when they are needed.
What produces ATP in virtually all living things is a molecular motor embedded in the membrane of the mitochondria — the cell’s powerhouse — called ATP synthase. It is a rotary motor, 20 nanometres in height, that spins at well over 1,000 RPM in response to incoming protons, converting ADP molecules into ATP with each rotation. Lubbert Stryer, emeritus professor of cell biology at Stanford University School of Medicine and a biochemist of over four decades’ standing, concluded that the ATP synthase motor appears to operate at close to 100% efficiency. No man-made engine comes close.
Engineers at the University of Michigan have been studying these motors not as curiosities but as blueprints. Rather than starting from scratch to invent a nanomotor, they are looking at these self-assembled, ultra-efficient, incredibly small natural motors that exist all around and within us. One researcher put it plainly: these things are machines. It would be amazing to figure out how to make them. ATP synthase motors are not optional equipment in living things. They are universal — present in all known life forms, performing the same function across the entire biological world. There is no such thing as a living thing too simple to need them.
Haldane’s Challenge — and Its Demolition
In 1949, the British evolutionary biologist and communist J.B.S. Haldane was candid enough to stake out a falsifying criterion for evolution. Because undirected natural processes have no mind, no foresight, and no capacity to plan, Haldane argued that evolution could never produce certain structures — specifically those that would be useless until they were virtually complete. His examples included the wheel and the magnet.
Haldane’s criterion has not simply been met by what science has since discovered. It has been obliterated. Many bacteria are propelled by a genuine rotary motor — a stator, a rotor, a drive shaft, and bushings guiding it through the cell wall, with a long whip-like filament spinning to drive the organism through its environment. The bacterial flagellum, as this structure is called, can rotate at more than 200 times per second in some species. It also possesses a clutch mechanism, a feature researchers explicitly compare to the clutch in a modern vehicle. As for Haldane’s magnets, it has since been established that fish, ants, turtles, and birds use magnetic sensors for navigation. And some insects, such as the planthopper, possess intermeshing gear teeth in their hind legs — functional, load-bearing gears with rounded corners at their contact points, identical in engineering principle to the gears inside every bicycle and every car gearbox.
When you combine the ATP synthase motor, the bacterial flagellum with its clutch, biological gears, miniature molecular robots called kinesins, and the staggering data compression architecture of DNA, the cumulative picture is not one of accidents accumulating over time. It is one of engineering at a level of sophistication that surpasses anything human designers have yet achieved.
The Philosophical Admission
What is perhaps most remarkable is not the biology itself, but the response of some within the scientific establishment to it. Confronted with evidence of design so compelling that it strains the language of chance, some evolutionary papers have begun to speak of evolution as if it possesses intelligence. One paper suggested that evolution is able to learn from previous experience, that natural selection can accumulate knowledge, and that this explains why biological design appears to be so intelligent.
This is not science. It is the attribution of mental properties — learning, knowledge, foresight — to a process that is, by definition, mindless. It is a concession dressed as an explanation. The machinery demands a mind, and when the commitment to materialism forbids acknowledging that mind, the only recourse is to grant mind to the machinery by another name.
The geneticist and self-described Marxist Richard Lewontin stated this commitment with unusual candour in a widely-cited passage:
This is what is called methodological naturalism — not a scientific conclusion, but a philosophical starting point. The evidence is not driving the conclusion. The conclusion was fixed in advance, and the evidence must be made to fit it. When the evidence will not fit, the language is adjusted until it appears to.
What Scripture Has Always Said
The Bible does not require molecular biology to make its point, but molecular biology has made it anyway with extraordinary precision. The apostle Paul wrote to the Romans:
Paul was not writing about ATP synthase or bacterial flagella, but he might as well have been. The invisible attributes of God — his eternal power and his divine nature — are clearly perceived in the things that have been made. A 20-nanometre rotary motor operating at near-perfect efficiency, present in every form of life without exception, requiring no simpler precursor that has ever been observed, is precisely what Paul described: evidence so plain that its suppression is not an intellectual act but a moral one.
Christians should hold this evidence gratefully, but soberly. Not all who have accepted the story of evolution are as philosophically entrenched as Lewontin. Many have simply been formed by a system of education and media that presents evolutionary naturalism as the settled verdict of science, not the metaphysical commitment that it partly is. Such people are worth engaging with patience and care. But for those whose rejection of the Creator is a settled prior commitment, no amount of evidence will suffice — and Scripture tells us exactly why.