The silky junkyard/747 analogy is not an analogy at all. The creationist industry should stop using it. It reveals a staggeringly ignorant view of science.The only thing that could have been added to that first life form was..."natural selection". And all it had to work with was what the microbe had within it.
The same with the junkyard/747 analogy. All the needed materials had to be there at the time of the explosion.
Biological organisms evolve. They react to chemical interactions and environmental pressures. Mechanical components do not.