Labels:clock | crt screen | plaything | sculpture | tribute album OCR: BASE He mixed hydrogen cyanide and END GUANINE solution ammonia ir an aqueous without introducing an aldehyde He found that amino acids could indeed be produced from these chemicals CYTOSINE in addition he made an unexpected RIBOSE discovery the most abundant complex molecule identified was adenine URACIL RNA IS COMPOSED OF NUCL EOTIDES each of which consists ofa phosphate group (green box) and the sugar ribose (yellow box) linked NUCLEOTIDE toa nitrogen -containing base (blue boxes): guanine G) cytosine (C) uracil (U or adenine (A). Uracil on one strand of RNA can pair with HYDROGEN adenine on another strand and cytosine can NITROGEN PHOSPHATE pair with guanine, producing double helix OXYGEN (inset) Such complementary base pairing is CARBON thought to have contributed to the ability of PH ...
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