For example, consider baker’s yeast, which is a single-celled organism. Compared to the human cell, the yeast cell may seem simple. Yet, it is incredibly complex. Yeast cells have a well-organized nucleus with DNA. They are equipped with microscopic “machines” that sort, transport, and modify molecules​—steps that are vital for these organisms to live. When a yeast cell runs out of food, it launches a sophisticated chemical process that slows down its activity. This allows baker’s yeast to remain dormant, but alive, in a kitchen pantry until it is activated by the baking process.

Scientists have been studying yeast cells for decades in order to understand human cells better. But they still have a long way to go. “There are just not enough biologists around to do all the experiments we want to do to understand how even yeast works,” laments Ross King, professor of machine intelligence at Chalmers University of Technology in Sweden.

What do you think? Does the mind-boggling complexity of the humble yeast cell give evidence of design? Could such design have come about without a designer?