When I first started learning about bacteria, I remember thinking how amazing it was that a unit of life could be that small. Then I learned about viruses in comparison to bacteria and my mind was truly blown. On top of all this, think about how our bodies are carrying out such a complex, precise, multi-step process as DNA replication, every minute. Even microbes, who don’t think or have feelings, have signal transduction systems of mult-step complexity, like computer systems. And all of this is too small for our human minds to be aware of. Scientists such as Hershey and Chase were able to fluorescently mark the tiny particles of protein and DNA in bacteriophage almost 100 years ago now. It truly blows my mind not only how much we’ve been able to figure out, but how small the scale of life can be. My mind just cannot comprehend things that small. I know we can’t see forms of life that are that small, but they are real and they’re ubiquitous. I truly can’t wrap my mind around it. #animals source