You truly know your chemistry, I never argue with chemistry I think it is quite genius. I have no other explanation so I accept your explanation that even us are made of atoms.They do not have generic code that tells them where to be placed either.
The reason that planets and stars are spherical is because the strength of gravity overwhelms the compressive strength of the materials that they are made of, forcing them into shapes with a minimum of gravitational potential energy. Chemistry has nothing to do with their shape (unlike with living things, where chemistry is all-important).
If our Solar System is any indication of what other star systems are like, then the vast majority of macroscopic objects in the Universe are not spherical but have an irregular shape (look at how many asteroids there are versus how many planets there are).QuoteWhere in humans the formation is much more complex. Does dna tell the atoms where to go?
DNA, along with the necessary enzymes, are indeed responsible for "telling" a lot of other atoms where to go. Sometimes it's direct and sometimes it isn't. The formation of a messenger RNA strand along an open strand of DNA is determined directly by chemical laws whereby certain ribonucleotides fit better with their corresponding deoxyribonucleotides via hydrogen bonds than others. This naturally leads to the formation of the required RNA strand. Similar laws allow the sequence of ribonucleotides in RNA to be translated into peptides by assembling amino acids. These peptides include enzymes, which are selectively-shaped to catalyze specific chemical reactions but not others. Some things are not determined directly by DNA alone, but by epigenetic effects (i.e. cues from the outside environment that affect how DNA is expressed, which lead to modified DNA function without necessarily incurring a genetic mutation).
Some things, however, occur without DNA having to "tell" it how to work. The phospholipid bilayer of a cell membrane forms due to chemical laws that make the polar ends of the molecule attracted to the water it is immersed in while the non-polar ends are attracted to each other (like attracts like). The lowest energy configuration for this is roughly spherical, so many cell membranes are naturally spherical (although other molecules present in the membrane can alter the shape radically in some types of cells). It's all down to chemistry.
Of course, the arrangement of these molecules is of critical importance. If you put a human in a blender, all of the same molecules will be present after the blending process but the soup will no longer be alive nor will it spontaneously come to life. The atoms have not been changed by the blending, so obviously there is nothing special about the atoms themselves that made the original human alive: it was their arrangement.
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