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- Which of the following pathways requires molecular oxygen (O2)? a. aerobic respiration b. lactate formation c. alcoholic fermentation d. photosynthesisWhich of the following substances does not participate in the Calvin-Benson cycle? a. ATP c. NADPH e. PGAL b. O2 d. RuBP f. CO2In ________, electrons that have been energized by light contribute their energy to add phosphate to ADP, producing ATP. (a) crassulacean acid metabolism (b) the Calvin cycle (c) photorespiration (d) C4 pathways (e) photophosphorylation
- The Calvin cycle begins when CO2 reacts with (a) phosphoenolpyruvate (b) glyceraldehyde-3-phosphate (c) ribulose bisphosphate (d) oxaloacetate (e) phosphoglycerateThe enzyme directly responsible for almost all carbon fixation on Earth is (a) rubisco (b) PEP carboxylase (c) ATP synthase (d) phosphofructokinase (e) maltaseMatch each term with its most suitable description. ____ PGAL formation a. absorbs light ____CO2 fixation b. converts light to chemical energy ____ autotroph c. self-feeder ____ ATP forms NADPH does not d. electrons cycle back to photosystem ____ photorespiration e. problem in C3 plants ____ photosynthesis f. Calvin-Benson cycle product ____ pigment g. water molecules split ____ photolysis in photosynthesis h. rubisco function
- Which of the following substances does not participate in the CalvinBenson cycle? a. ATP b. NADPH c. RuBP d. PGAL e. O2 f. CO2Match the number of the label in the diagram (below) with the appropriate site or structure from the list that follows. e Ca e dependet aon water-piting comples plasticyanin label 1 label 3 e label 5 g label 7 a b label 2 d label 4 f label 6 81. stroma 82. photosystem I 83. photosystem II 84. thylakoid lumen 85. electron transport 86. cytochrome complex 87. ATP synthaseThe figure shows the absorption spectrum for chlorophyll a and the action spectrum for photosynthesis. Why are they different? 400 500 600 700 Wavelength of light (nm) O Green and yellow wavelengths inhibit the absorption of red and blue wavelengths. O Oxygen given off during photosynthesis interferes with the absorption of light. O Other pigments absorb light in addition to chlorophyll a. Absorbance of chlorophyll a Violet Blue Green Yellow Orange Red - Rate of photosynthesis
- 700 600 Wavelength (nm) 500 Chlorophyll b is associated with the greatest rate of photosynthesis. The photosynthesis rate at 550 nm is the highest. Chlorophyll a absorbs wavelengths at both ends of the spectrum Carotenoids absorb the narrowest range of wavelengths of lightThe chlorophyll in photosynthesis is used for: I. Absorbing light II. Breaking down water molecule III. No function IV. Reduction of CO2What process is shown in the figure below? 3 Molecules CO2 RuBisCO Stage 1: carbon fixation 3 ADP 6 ATP ЗАТР 6 ADP Stage 3: regeneration of RUBP Stage 2: reduction 6 NADPH - 6 NADP*+ H* Sugar O Glycolysis O Light reactions of photosynthesis Oxidative phosphorylation Citric Acid Cycle O Dark reactions of photosynthesis