A purine is a heterocyclic aromatic organic compound. It consists of a pyrimidine ring fused to an imidazole ring. Purines, which include substituted purines and their tautomers, are the most widely occurring nitrogen-containing heterocycle in nature.his is called complementary base pairing. In RNA, the complement of adenine is uracil instead of thymine. Other notable purines are hypoxanthine (4), xanthine (5), theobromine (6), caffeine (7), uric acid (8) and isoguanine (9).
However, because of Christ and His death on the cross, the meaning of the cross today is completely different. In Christianity, the cross is the intersection of Godâs love and His justice. Jesus Christ is the Lamb of God who takes away the sin of the world (John 1:29). The reference to Jesus as the Lamb of God points back to the institution of the Jewish Passover in Exodus 12.
Subscribe to our Question of the Week: Question: What is the meaning of an upside-down / inverted cross?. Answer: The upside-down cross, or the inverted cross, is a symbol with a long history and, in modern times, divergent meanings. As its name implies, an upside-down cross is simply a Latin cross turned so that the crosspiece is closer to the bottom than the top.