These processes, however, are designed to
remove larger organic molecules with lower solubility, thus removal of very small molecules with high solubility is difficult.
They linked the subunits with clusters of zinc acetate to create a scaffold riddled with wide channels, then soaked the crystals in
various large organic molecules to test their sponginess and ability to sort by size.
Astronomers studying a nearby dwarf galaxy have
detected large organic molecules, suggesting that the basic chemical building blocks of life can form in places much more primitive than our own galaxy.
In the first step, the researchers used osmosis — a process in which some substances pass through a membrane — to
separate large organic molecules from the water, urea, and other small dissolved molecules or atoms, which pass through the membrane into a salty solution.
We found that the particles seen in our images, which were droplets of ocean only hours earlier, bore evidence
of large organic molecules and compounds that indicated hydrothermal activity similar to that observed at deep - sea vents on Earth's seafloor.
For example, it is stated that «under the appropriate conditions, phosphate reacts with ribose and nucleobases to form
a large organic molecule called a nucleotide.»
The latter two molecules are
the largest organic molecules ever conclusively detected outside the Milky Way.
In a 1996 Science paper, these two phenomena — along with the chemical distribution in the globules and the detection of
large organic molecules — were taken collectively as signatures of biological activity occurring long ago on Mars.
Being not competent in chemistry, I can just guess
that large organic molecules in the antifreeze are breaking up due to the high temperature.