Question

In both photosystem I and photosystem II, light energy is used to excite electrons. To the confusion of many students, the two photosystems were named in the order of their discovery, and not in the order of their work in the light-dependent reactions. Photosystem II comes first in the sequence of events that moves electrons from water molecules to their destination, NADP+. Hydrogen ions travel with the electrons, and they change NADP+ into NADPH. The process is summarized in this diagram. Light Light STROMA 2H+ + 2 NADP+ + 4e- -> 2 NADPH To Light-Independent Reactions H+ H+ H+ H+ H+ Electron carriers Thylakoid membrane Photosystem II Photosystem I ATP synthase ADP + P ATP To Light-Independent Reactions 4e- H+ H+ 2 H2O -> 4H+ + O2 H+ H+ THYLAKOID SPACE How is the production of NADPH useful for the process of photosynthesis?

          In both photosystem I and photosystem II, light energy is used to excite electrons. To the confusion of many students, the two photosystems were named in the order of their discovery, and not in the order of their work in the light-dependent reactions. Photosystem II comes first in the sequence of events that moves electrons from water molecules to their destination, NADP+. Hydrogen ions travel with the electrons, and they change NADP+ into NADPH. The process is summarized in this diagram.

Light
Light
STROMA
2H+ + 2 NADP+ + 4e- -> 2 NADPH
To Light-Independent Reactions
H+
H+
H+
H+
H+
Electron carriers
Thylakoid membrane
Photosystem II
Photosystem I
ATP synthase
ADP + P
ATP
To Light-Independent Reactions
4e-
H+
H+
2 H2O -> 4H+ + O2
H+
H+
THYLAKOID SPACE

How is the production of NADPH useful for the process of photosynthesis?

In both photosystem I and photosystem II, light energy is used to excite electrons. To the confusion of many students, the two photosystems were named in the order of their discovery, and not in the order of their work in the light-dependent reactions. Photosystem II comes first in the sequence of events that moves electrons from water molecules to their destination, NADP+. Hydrogen ions travel with the electrons, and they change NADP+ into NADPH. The process is summarized in this diagram.

Light
Light
STROMA
2H+ + 2 NADP+ + 4e- -> 2 NADPH
To Light-Independent Reactions
H+
H+
H+
H+
H+
Electron carriers
Thylakoid membrane
Photosystem II
Photosystem I
ATP synthase
ADP + P
ATP
To Light-Independent Reactions
4e-
H+
H+
2 H2O -> 4H+ + O2
H+
H+
THYLAKOID SPACE

How is the production of NADPH useful for the process of photosynthesis?

Added by Heather C.

Question

Please give Ace some feedback