as a celebration of my recent return to the worlds of chemistry and academia, let’s share a moment of appreciating how interesting looking molecular orbitals are. (in case you are vaguely curious as to what they are, each one is a depiction of where the electrons orbit around in a molecule.)
Structures of solid oxygen under high pressure: At 1.9 TPa, oxygen polymerizes and assumes a square spiral-like structure, which is semi-conducting (top). With increasing pressure, the polymer exhibits metallic properties (zig-zag chain-like phase, mid). Then, the structure changes into a metallic layer phase (bottom). The coloured areas represent the charge density in one layer of the structure. (Credit: © Jian Sun)
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Edman degradation - A simple reaction used in peptide sequencing. This reaction labels the amino-terminal aminoacid of the sequence without breaking the bonds of the entire sequence like other reactants (such as the Sanger reactant) do. This way the aminoacids can be sequenced one by one. Unfortunately, this method is too slow and unpractical for large petides with longer amnoacidic chains, so it is usually applied in combination with other sequencing reactants.
The Kreb’s Cycle aka the Citric Acid Cycle… you fucking perverts.
“a series of chemical reactions which is used by all aerobic living organisms to generate energy through the oxidization of acetate derived from carbohydrates, fats and proteins intocarbon dioxide and water…” (wikipedia)
Maybe it’s because I have spent all my free time the last three days studying for my O Chem midterm but I thought this was the funniest thing ever.