Source image: Stanford Children From Cell to Soul It begins with something microscopic: a cell, a spark, a zygote. A meeting of two parts destined to become one. That’s the biological origin of every human being: small, unseen, yet miraculously alive. In the womb, our heart begins to beat before we ever think a thought. Our body forms before we are aware of it. We are nourished, protected, and carried. Life happens and it's full of mystery. Cell A cell is the basic structural, functional, and biological unit of all living organisms. In humans, cells come in many types, each with specialized functions. Every human starts as a single cell, the zygote which carries all the genetic information needed to develop into a complete organism. The Zinc Spark The zinc spark is a real biological phenomenon that occurs during fertilization. When a sperm successfully fertilizes an egg, the egg releases billions of zinc ions in a burst, producing a visible flash of light under a mi...
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