The cards Question What is the stack of thylakoids in a chloroplast called? Tap to flip Answer A granum (plural: grana). Question What is the liquid-filled space surrounding the grana in a chloroplast called? Tap to flip Answer The stroma. Question What is the internal space enclosed by the thylakoid membrane called? Tap to flip Answer The thylakoid lumen. Question Where in the chloroplast do the light-dependent reactions take place? Tap to flip Answer In the thylakoid membrane. Question Where in the chloroplast does the Calvin cycle take place? Tap to flip Answer In the stroma. Question What do the light-dependent reactions make for use in the Calvin cycle? Tap to flip Answer ATP and NADPH. Question What does the Calvin cycle make from CO2? Tap to flip Answer G3P (glyceraldehyde-3-phosphate). Question What is the overall function of the light-dependent reactions? Tap to flip Answer To convert solar energy into chemical energy in the form of NADPH and ATP. Question What multiprotein complex in the thylakoid membrane converts light energy into chemical energy? Tap to flip Answer A photosystem. Question Which two photosystems are embedded in the thylakoid membrane? Tap to flip Answer Photosystem II (PSII) and photosystem I (PSI). Question Why are the photosystems numbered II and I? Tap to flip Answer The numbering follows the order in which they were discovered, not the order of electron transfer. Question What are the two parts of a photosystem? Tap to flip Answer A light-harvesting complex and a reaction center. Question What does the light-harvesting complex of a photosystem do? Tap to flip Answer It passes energy from sunlight to the reaction center. Question What is the name of the reaction center of photosystem II? Tap to flip Answer P680. Question What is the name of the reaction center of photosystem I? Tap to flip Answer P700. Question What is the initial source of electrons for the chloroplast electron transport chain? Tap to flip Answer Water. Question How is P680 re-reduced after each photoact? Tap to flip Answer By taking a low-energy electron from water, which splits the water. Question Which gas is released when water is split in the light-dependent reactions? Tap to flip Answer Oxygen (O2). Question Which photosystem sends a high-energy electron to NADP+ to form NADPH? Tap to flip Answer Photosystem I (through P700). Question Which enzyme complex passes electrons from plastoquinone to plastocyanin between PSII and PSI? Tap to flip Answer The cytochrome complex. Question What happens to the energy electrons lose as they move between PSII and PSI? Tap to flip Answer It is used to move hydrogen ions from the stroma into the thylakoid lumen. Question Which enzyme catalyzes the reaction of CO2 with RuBP in the Calvin cycle? Tap to flip Answer RuBisCO (ribulose-1,5-bisphosphate carboxylase/oxygenase). Question What does RuBP stand for, and how many carbon atoms does it have? Tap to flip Answer Ribulose bisphosphate; it has five carbon atoms. Question What compound forms when RuBisCO fixes CO2 onto RuBP? Tap to flip Answer 3-PGA (3-phosphoglyceric acid), a three-carbon molecule. Question What is carbon fixation? Tap to flip Answer The conversion of CO2 from an inorganic form into organic molecules. Question In the Calvin cycle, what is 3-PGA converted into during reduction, and what supplies the energy and electrons? Tap to flip Answer G3P; ATP supplies energy and NADPH supplies the electrons. Question What is regenerated in stage 3 of the Calvin cycle so the cycle can continue? Tap to flip Answer RuBP. How this deck was checked On 2026-10-24, every card was compared with a primary source and with a second source from a different publisher. The comparison was done automatically, not by a teacher, so a card can still be wrong. Flash Feed is not affiliated with any source named here.
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