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225

Centuries: 2nd century - 3rd century - 4th century

Decades: 170s 180s 190s 200s 210s - 220s - 230s 240s 250s 260s 270s

Years: 220 221 222 223 224 - 225 - 226 227 228 229 230

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Photosynthesis

... protein, but this time are passed on to ferredoxin, and then to an enzyme called NADP+ reductase[?] which uses them to drive the reaction NADP+ + H+ + 2e- → ...