I read about such experiments some time ago. If I remember correctly, after being forced awake for some time, some people stopped being tired and had to be forced to sleep. I also believe there are individual differences, so while some people in the discussion describe their own interesting experience, keep in mind that others might react differently.

Not any more. It was never an official name. Now it is Arrokoth.

It’s not so much about nuclear envelope and more about ends. DNA polymerase (an enzyme that builds new DNA) cannot copy the whole end - there are a few bases that should be at the end but cannot be added. Eukaryota deal with it by a complex mechanism (they have telomeres), but it allows for multiple chromosomes and therefore larger genomes. Bacteria have a circular genome instead, a circle doesn’t have an end, so they can copy as much as they need.

BTW, mitochondria and plastids, being former bacteria, also have circular genomes.