SORU: boş bırakılan yere parçanın anlam bütünlüğünü sağlamak için getirilebilecek cümleyi bulunuz
The cell theory, one of the fundamental unifying concepts of biology, states that all living organisms are composed of basic units called “cells” and of substances produced by cells. Although they vary greatly in size and appearance, all organisms are composed of those small building blocks. Some of the simplest life forms, such as bacteria, are unicellular: they consist of a single cell. ---- In these complex multicellular organisms, life processes depend on the coordinated functions of the component cells.