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AP Biology Photosynthesis Flashcards

Chapter 10 Vocabulary for AP Biology

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8738152876ChlorophyllGreen Pigment Main photosynthetic pigmnet Absorbs primarily violet-blue and red wavelengths0
8738152877Thylakoidsdense interconnected membranous sacs where the light reactions occur1
8738152878Granastacks of thylakoid2
8738152879Granumsingular of grana3
8738152880Chloroplastsites of photosynthesis4
8738152881Photosynthesisconversion of light energy into chemical energy stored in sugar and other organic molecules5
8738152882Photosynthesis Equation6 CO2 + 6 H2O + light --> C6H12O6 + 6 O26
8738152883Carbon Dioxidesource of inorganic carbon used in photosynthesis7
8738152884Electromagnetic SpectrumElectromagnetic energy which travels in waves8
8738152885ColorsLight we see is reflected off objects and light we don't see is absorbed by objects9
8738152886WhiteAll colors reflected10
8738152887BlackAll colors absorbed11
8738152888Chlorophyll amain photosynthetic green pigment, absorbs primarily violet-blue and red wavelengths12
8738152889Pigmenta molecule that absorbs wavelengths in the visible light spectrum13
8738152890CarotenoidGroup of pigments that absorb blue and blue-green wavelengths, appear orange, yellow, and red14
8738152891Light ReactionsOccur in thylakoid membrane and are also called light dependent reactions15
8738152892PhotosystemConsists of a reaction-center complex surrounded by light-harvesting complexes which split water to create electrons that get transferred to NADP+ to create NADPH and H+ which are used to create ATP16
8738152893Light-Harvesting ComplexContains chlorophyll a, chlorophyll b, and carotenoids (within the photosystem) that will trap light energy for use in the light reactions17
8738152894Photosystem 1Has P700 chlorophyll a in reaction-center complex, thought to have evolved first because it can work alone to create primary acceptors, 2nd of the photosystems18
8738152895Photosystem 2Has P680 chlorophyll a in reaction-center complex, first of the photosystems. splits water into electrons, oxygen, and hydrogen ions19
8738152896CytochromeProtein in the electron transport chain of the photosystems that transfers the electrons to create NADPH20
8738152897Calvin CycleLight-Independent reactions Occurs in stoma, does not use light directly. Uses the enzyme Rubisco to create 2 molecules of G3P which is then either used to create glucose or recycled back into RuBP to restart the cycle21
8738152898RubiscoThe most abundant protein on Earth Carbon Fixation is catalyzed by Rubisco22
8738152899ReductionThe carbon molecules made in Carbon Fixation are reduced into to G3P by adding the negative phosphate from a NADPH that can be used to make glucose or perform other processes23
87381529001 Cycle of Calvin Cycle1 CO2 is fixed 3 ATP are used 2 NADPH are used 1 RuBP is regenerated 6 cycles needed to make 1 glucose molecule24
8738152901C4 PhotosynthesisA method that bypasses photorespiration Happens in corn, sugarcane, and other plants in hot, dry environments Converts carbon dioxide to a 4-carbon intermediary which is then stored in bundle-sheath cells25
8738152902C3 PlantPlants that use the Calvin Cycle without creating carbon intermediaries, take in carbon dioxide through stomata. An enzyme called RuBisCO helps the carbon dioxide combine to make sugar.26
8738152903chlorophyll bPigment that absorbs light in the blue and orange light spectrum. Second major pigment used in plants.27
8738152904CAM PlantsPlants that only open stomata at night. They convert carbon dioxide to malic acid which is then converted back into carbon dioxide during the day for the Calvin cycle28

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