8. Put the following steps of the light reactions in the correct order. ____ ATP is produced by chemiosmosis. ____ Pigments absorb light energy and electrons are excited. ____ H+ ions are pumped into and accumulate in the thylakoid space. ____ Energy moves to the primary electron acceptor. ____ Electron flow terminates with the reduction of NADP+. ____ Water molecules are split into protons, electrons, and oxygen. ____ Pigments absorb light energy and electrons are excited. ____ Electrons lose energy as they flow from one photosystem to the next.
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Place the following steps of the light reaction in the correct order: A. A primary electron acceptor grabs the excited electrons from the first photosystem and transfers them to the first electron transport chain. B. To replace the excited electrons, electrons from the first electron transport chain are used. C. An electron in chlorophyll in the first photosystem is excited when hit by a light photon. D. Electrons travel down the second electron transport chain. E. Electrons are passed to NADP+ to create NADPH (an electron carrier) F. As electrons travel through the electron transport chain, they release energy which is used to make ATP from ADP (via a proton pump & ATP synthase). G. To replace the excited electrons, water molecules are split, creating O2 and H+ ions as byproducts. H. An electron in chlorophyll in the second photosystem is excited when hit by a light photon. I. A primary electron acceptor grabs the excited electrons from the second photosystem and transfers them to the second electron transport chain.
Dominador T.
Can you arrange these steps of photosynthesis into the correct order? BEGIN with the LIGHT REACTIONS. Please note, these are the main steps but do not include every little detail. In the Calvin Cycle, CO2 from the AIR is incorporated into 3-Carbon organic molecules that eventually are used to make sugar. NADPH and ATP are in the stroma where the Calvin cycle happens. Ferredoxin passes electrons to NADP+ reductase and then NADPH is generated. PS I donates electrons to Fd (ferredoxin). P700 donates electrons to the reaction center in PS I. The electrons end up in Photosystem I. Photosystem II is hit by a photon of light. Energy is transferred from chlorophyll to chlorophyll inside PS II. P680 is energized and donates electrons to the primary acceptor in the reaction center. The electron transport chain begins, causing H+ pumping into the thylakoid space.
Indrajeet M.
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