Says if the size of an atom is 100 picometers and our cell is 10 micrometers; a cell would have a space for 100,000 atoms. As cells come in various sizes, we may estimate a cell would have at least the size of tens to hundres thousands of atoms.
Most of human bodies are made of water, followed by protein. Water is simple H2O transporting and communication within us so it makes sense to say we are made of protein. Protein is amino acid which ranges from 1-10 nm.
For example, red blood cell is about 7-8 microns and mades up of 4 chains of protein with an iron composite molecule in the middle mades up a total of 5,640 atoms which is less than 1 micron = less than 10% of the cell, hence 90% of non matters.
the fine words
. atom sizes varies and even the measurement of atom size is yet to be concluded; it could be from nucleus to the outest orbit of electron or distance between 2 nucleus; both have their justification and challenges.
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