Is this right: Place numbers beside the statement below to indicate the order of events occurring in the light reactions:
3 low energy electrons at PSI are re-energized by a photon of light
5 electrons energized at PSII jump to a higher lever, as they fall through various membrane proteins H+ is pumped from the stroma to the lumen
1 photons of light with a wavelength of 680nm enter the chloroplast (this is the only one I know is correct)
6 H+ pumped with the energy of electrons from PSI diffuses through ATP synthase making ATP and the electrons at the end of the chain are donated to NADP+ to make NADPH
4 A photon of light splits water and electrons enter PSII
2 electrons re-energized by PSI jump to a high energy level, as they fall through various membran proteins, H+ is pumped from the stroma to the lumen
8 H+ pumped into the lumen by electrons energized at PSII diffuse through ATP synthase making ATP
7 ATP and NADPH head to the stroma to be used in the Calvin cycle
THANKS! I AM FOREVER GRATEFUL!
To determine the correct order of events occurring in the light reactions, we need to carefully analyze the statements and identify the logical sequence of events. Here's the correct order:
1. Photons of light with a wavelength of 680nm enter the chloroplast.
- This statement is correctly placed and marks the beginning of the light reactions.
2. A photon of light splits water, and electrons enter PSII.
- This step occurs after the photons of light enter the chloroplast.
3. Electrons energized at PSII jump to a higher energy level.
- After the electrons enter PSII, they are energized and move to a higher energy level.
4. As the energized electrons fall through various membrane proteins, H+ is pumped from the stroma to the lumen.
- This step occurs simultaneously as the electrons from PSII fall through the membrane proteins.
5. Low energy electrons at PSI are re-energized by a photon of light.
- After the energized electrons from PSII reach PSI, they are re-energized by a photon of light.
6. Electrons re-energized by PSI jump to a higher energy level.
- Once the low energy electrons at PSI are re-energized, they jump to a higher energy level.
7. As the re-energized electrons fall through various membrane proteins, H+ is pumped from the stroma to the lumen.
- This step occurs simultaneously as the electrons from PSI fall through the membrane proteins.
8. H+ pumped with the energy of electrons from PSI diffuses through ATP synthase, making ATP. The electrons at the end of the chain are donated to NADP+ to make NADPH.
- Once the H+ ions are pumped to the lumen, they pass through ATP synthase, resulting in ATP production. Meanwhile, the electrons from PSI are used to produce NADPH.
9. H+ ions pumped into the lumen by electrons energized at PSII diffuse through ATP synthase, making ATP.
- After the energized electrons from PSII fall through the membrane proteins, H+ ions are pumped into the lumen and then pass through ATP synthase, generating ATP.
10. ATP and NADPH head to the stroma to be used in the Calvin cycle.
- Once ATP and NADPH are synthesized, they are transported to the stroma to participate in the Calvin cycle.
By following this logical sequence, you can accurately order the events occurring in the light reactions of photosynthesis.