In order to resolve a problem, we need to break it down into its tiniest, irreducible parts and then examine and analyze it. What is the smallest part of life? It’s the cell, of course—“the basic structural, functional, and biological unit of all known living organisms and the smallest unit of life,” according to Wikipedia. You studied that one in high school, remember? The cell structure is very complex—plasma membrane, cytoplasm, mitochondrion, nucleus, etc. (see the picture above). Every cell is a miniature laboratory where very complicated chemical reactions occur, leading to an organism’s growth, metabolism, muscle, bone formation, reproduction, immunity, and everything else imaginable. Now, considering that the human body comprises about 30 trillion cells, one percent of which (or about 330 billion cells) are replaced daily, let’s see how Michael Denton, Ph.D. in biochemistry and author of Evolution, A Theory in Crisis, describes the extreme complexity of one single cell.
“To grasp the reality of life as it has been revealed by molecular biology, we must magnify a cell a billion times until it is twenty kilometers in diameter and resembles a giant airship large enough to cover a great city like London or New York.…“