For each step of photosynthetic electron flow from water to NADP+, drag the appropriate label to indicate whether or not that step requires an input of energy. View Available Hint(s) no energy input required energy input required Electron transport step 1. Water P680* 2. P680 Pq (plastoquinone) 3. Pq P700* 4. P700 Fd (ferredoxin) 5. Fd NADP+ Energy input required? IIIII Reset Help