Photosynthesis Flashcards
(8 cards)
Thylakoids
saclike photosynthetic membranes
- gather sun’s energy with light absorbing molecules called pigments
Light reactions
convert light energy into chemical energy
-Produce ATP and NADPH
Carbon fixation reactions (dark reactions)
use ATP and NADPH from light reactions plus CO2 to produce carbs
What happens when photons are absorbed
molecule acquires the energy of the photon, molecule goes from ground state to excited state
Electron acceptor
the first carrier in an electron transport system in thylakoid
Electron flow
Happens after chlorophyll a gives off an electron and finally reduced NADP+ into NADPH and H+
Light rxn pt2.
-18 ATP made
- Water is split
-12 NADPH are made
light independednt rxn 2.
-Fixation of CO2 catalyzed by Rubisco
- Reduction of 3PG into G3P
-Regeneration of CO2 acceptor RuBP (5/6 are recycled back to RuBP, 1/6 used to make sugars