A derivative of this compound is treated with bisulfite to synthesize uracil. For 10 points each:
[10m] Name this cyclic compound present in uracil and cytosine, which also names a class of nucleobases.
ANSWER: pyrimidines
[10m] Name these materials, which are partly made from fermented plant husks. The largest structure made of a type of these materials called barco is located in Djenné (“jen-AY”).
ANSWER: mud-bricks [accept adobe; prompt on mud or bricks]
[10e] Pyrimidines and purines engage in base pairing using these strongest intermolecular forces. These interactions form between a namesake element on one molecule and a highly electronegative element on another.
ANSWER: hydrogen bonds [or hydrogen bonding; accept H-bonds or H-bonding]
[10e] That structure in Djenné is the “Great” one of these places. Unusually for its time, six minarets surround the “Blue” one of these locations, whose qibla wall faces the direction of prayer.
ANSWER: mosque [accept the Great Mosque of Djenné; accept Blue Mosque]
[10h] Purine nucleobases consist of a pyrimidine ring along with this other ring. This nitrogen heterocycle is present in the side chain of histidine.
ANSWER: 1H-imidazole [or ImH; or 1,3-diazole; or glyoxaline; or 1,3-diaza·cyclopenta-2,4-diene; prompt on diazole alone]
[10h] Mud-brick was used for a number of these other locations, whose large portals entered into a rectangular courtyard that may include water for wudu, identical stalls, and an apartment complex.
ANSWER: caravanserai [or caravansary; prompt on roadside inns]
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