Your next bonus is visual. Researchers at the Lamason Lab recently discovered new compounds that are released by Ricksettia, an intracellular bacterial pathogen. Answer the following two questions about this figure from their recent paper: 1) In part a, the reaction labeled "click" was the subject of the 2022 Nobel Prize in Chemistry. This reaction was catalyzed by ions of what element? 2) In part d, what common stain colored the DNA blue?