-- card: 64705 from stack: in -- bmap block id: 62650 -- flags: 0000 -- background id: 2665 -- name: -- part 1 (button) -- low flags: 00 -- high flags: 8003 -- rect: left=348 top=223 right=245 bottom=448 -- title width / last selected line: 0 -- icon id / first selected line: 0 / 0 -- text alignment: 1 -- font id: 0 -- text size: 12 -- style flags: 0 -- line height: 16 -- part name: PURINE BASE -- part 2 (button) -- low flags: 00 -- high flags: 8003 -- rect: left=350 top=250 right=272 bottom=471 -- title width / last selected line: 0 -- icon id / first selected line: 0 / 0 -- text alignment: 1 -- font id: 0 -- text size: 12 -- style flags: 0 -- line height: 16 -- part name: PYRIMIDINE BASE -- part 3 (button) -- low flags: 00 -- high flags: 8003 -- rect: left=349 top=275 right=297 bottom=449 -- title width / last selected line: 0 -- icon id / first selected line: 0 / 0 -- text alignment: 1 -- font id: 0 -- text size: 12 -- style flags: 0 -- line height: 16 -- part name: SUGAR -- part 4 (button) -- low flags: 00 -- high flags: 8003 -- rect: left=350 top=302 right=324 bottom=450 -- title width / last selected line: 0 -- icon id / first selected line: 0 / 0 -- text alignment: 1 -- font id: 0 -- text size: 12 -- style flags: 0 -- line height: 16 -- part name: PHOSPHATE -- part 5 (button) -- low flags: 00 -- high flags: 8003 -- rect: left=205 top=315 right=337 bottom=256 -- title width / last selected line: 0 -- icon id / first selected line: 0 / 0 -- text alignment: 1 -- font id: 0 -- text size: 12 -- style flags: 0 -- line height: 16 -- part name: NEXT ----- HyperTalk script ----- on mouseUp go to next card end mouseUp -- part 6 (button) -- low flags: 00 -- high flags: 8003 -- rect: left=149 top=314 right=337 bottom=199 -- title width / last selected line: 0 -- icon id / first selected line: 0 / 0 -- text alignment: 1 -- font id: 0 -- text size: 12 -- style flags: 0 -- line height: 16 -- part name: PREV. ----- HyperTalk script ----- on mouseUp go back end mouseUp -- part contents for background part 1 ----- text ----- DEFINITIONS -- part contents for background part 2 ----- text ----- A nucleotide is a nitrogenous base (either a purine or pyrimidine) attached to a ribose sugar which itself is attached to phosphates.