Your argument about humans being a "cell" in a larger organism called God falls on its face. The reason is that humans are flesh and blood and the Bible says God is a spirit. Therefore, humans cannot be considered part of a cell in a larger organism that is your version of God because a spirit being and a flesh and blood creature are exact opposites.
"God is a SPIRIT, and those worshiping him must worship with spirit and truth." (John 4:24)
And I haven't even touched the millions of planets in the heavens and land masses and the seas on planet earth, in addition to the various life forms that are on earth. They are not parts of God because they are created things that are solid masses in many instances. God is a spirit.