When light strikes chlorophyll molecules in the reaction-center complex, they lose electrons, which are ultimately replaced bya. splitting water.b. oxidizing NADPH.c. the primary electron acceptor.d. the electron transport chain.

The light reactions of photosynthesis generate high-energy electrons, which end up in __________ through linear electron flow. The light reactions also produce __________ and __________.

The energy used to produce ATP in the light reactions of photosynthesis comes from __________.

Add labels to the figure that follows, which illustrates the product and reactants of photosynthesis and the relationship between its light reactions and light-independent reactions.

Which of the following sequences correctly represents the flow of electrons during photosynthesis?a. NADPH→O2→CO2b. H2O→NADPH→Calvincyclec. H2O→photosystemI→photosystemII d. NADPH→electrontransportchain→O2

Which of the following does not occur during the light reactions of photosynthesis?a. Water is released;b. Electrons from chlorophyll are moved to a higher-energy state by light;c. ATP is produced;d. NADPH is produced to carry electrons to the light-independent reactions;e. Oxygen is produced when water is split.

In mechanism, photophosphorylation is most similar toa. substrate-level phosphorylation in glycolysis.b. oxidative phosphorylation in cellular respiration.c. carbon fixation.d. reduction of NADP+.

Which of the following is a false statement about photosynthesis?a. During the light-independent reactions, electrons and ATP from the light reactions combine with atmospheric carbon dioxide to produce sugars;b. The light-independent reactions take place in the chloroplast stroma;c. Oxygen produced during the light-independent reactions is released into the atmosphere;d. Chlorophyll absorbs blue and red light and reflects green light;e. The end product of photosynthesis is a carbohydrate such as glucose.

Which process is most directly driven by light energy?a. creation of a pH gradient by pumping protons across the thylakoid membraneb. reduction of NADP+ moleculesc. transfer of energy from pigment molecule to pigment moleculed. ATP synthesis