Photosynthesis Practice Questions PDF

1) Where does Glycolysis Occur? a. Outer membrane of mitochondria b. Inner membrane of mitochondria (Cristae) c. Cytoplasm d. Cellular membrane e. Cytoskeleton Answer: c. Cytoplasm 2) Glycolysis is an ___ reaction Abnormal Endergonic Exergonic Unregulated En...

1) Where does Glycolysis Occur? a. Outer membrane of mitochondria b. Inner membrane of mitochondria (Cristae) c. Cytoplasm d. Cellular membrane e. Cytoskeleton Answer: c. Cytoplasm 2) Glycolysis is an ___ reaction Abnormal Endergonic Exergonic Unregulated Endothermic Answer: Exergonic 3) Which of the following conditions would most likely decrease the rate of photosynthesis? High CO2 concentration Low light intensity High temperature High water availability Answer: Low light intensity 4) Which metabolic pathway is common to both fermentation and cellular respiration? The citric acid cycle The electron transport chain Reduction of pyruvate to lactate Glycolysis Synthesis of acetyl CoA from pyruvate Answer: Glycolysis 5) Where do the light reactions and Krebs cycle reactions occur? a. Mitochondrial Cristae (Inner membrane) b. Mitochondrial Matrix c. Cytoplasm d. Cellular membrane e. Cytoskeleton Answer: b. Mitochondrial Matrix 6) Pyruvate is formed on the outer mitochondrial membrane In the cytosol In the nucleus On the inner mitochondrial membrane In the mitochondrial matrix Answer: In the cytosol 7) The final electron acceptor of the electron transport chain that functions in oxidative phosphorylation is Oxygen Water NAD+ Pyruvate ADP Answer: Oxygen 8) Which of the following does not occur during the Calvin cycle? Consumption of ATP Oxidation of NADPH Regeneration of the CO2 acceptor Carbon fixation Release of oxygen Answer: Release of oxygen 9) Which process (by methodology and by definition) requires oxygen? a. Glycolysis b. Krebs Cycle c. Fermentation d. Aerobic Respiration e. Anaerobic Respiration Answer: d. Aerobic Respiration 10) What is the primary role of chlorophyll in photosynthesis? To absorb light energy To fix carbon dioxide To produce ATP To split water molecules Answer: To absorb light energy 11) Most CO2 from catabolism is released during Glycolysis Lactate fermentation Electron transport The citric acid cycle Oxidative phosphorylation Answer: The citric acid cycle 12) Place the steps of the Calvin cycle in the correct order: Regeneration, reduction, fixation Fixation, reduction, regeneration Fixation, regeneration, reduction Reduction, regeneration, fixation Regeneration, fixation, reduction Answer: Fixation, reduction, regeneration 13) True or false - Aerobic respiration yields more ATP molecules per cycle than fermentation a. True b. False Answer: a. True 14) Which light bulb would be least useful for growing plants indoors? A blue light bulb A red light bulb A and B A white light bulb A green light bulb Answer: A green light bulb 15) The reduction of NAD+ produces Acetyl CoA FADH2 NADH Pyruvate Oxygen gas Answer: NADH 16) The final electron acceptor during the light reactions is NADP+ ATP Photosystem I Photosystem II H2O Answer: NADP+ 17) Why won't the light-independent reactions work in the dark after an extended period of no light? a. The light-dependent reactions use the end products of the light-independent reactions b. The light-independent reactions use the end products of the light-dependent reactions c. The light-independent reactions occur in the middle of the light-dependent reactions d. The light-dependent reactions occur in the middle of the light-independent reactions e. Light-independent reactions will always work regardless of the availability of light Answer: b. The light-independent reactions use the end products of the light-dependent reactions 18) The oxygen given off by photosynthesis comes from RuBP Glucose H2O CO2 Answer: H2O 19) During intense exercise, muscles lack sufficient oxygen, so what will the muscles use? Alcoholic fermentation Lactic acid fermentation The citric acid cycle Chemiosmosis Answer: Lactic acid fermentation 20) The light reactions of photosynthesis supply the Calvin cycle with Light energy Sugar and O2 H2O and NADPH CO2 and ATP ATP and NADPH Answer: ATP and NADPH 21) What is a waste product of photosynthesis? a. CO2 b. H2O c. C6H1206 d. O2 e. Light Energy Answer: d. O2 22) The function of light reactions is to Obtain CO2 Make carbohydrate Production of O2 Regenerate RuBP Convert light energy into a usable form of chemical energy Answer: Convert light energy into a usable form of chemical energy 23) Which of the following is the primary function of photosynthesis? To produce oxygen To break down glucose To convert light energy into chemical energy To store carbon dioxide Answer: To convert light energy into chemical energy 24) In photosynthesis, the oxygen released comes from: Carbon dioxide Water Glucose ATP Answer: Water 25) Which stage of cellular respiration produces the most ATP? Glycolysis The Krebs cycle The electron transport chain Fermentation Answer: The electron transport chain 26) Which of the following is NOT a product of glycolysis? Pyruvate ATP NADH FADH2 Answer: FADH2 27) Which of the following is the primary energy carrier used in photosynthesis? a. ATP b. NADPH c. Pyruvate d. Glucose Answer: b. NADPH 28) Where does photosynthesis take place? Palisade Mesophyll Upper epidermis Vein Cuticle Answer: Palisade Mesophyll 29) The light-dependent reactions of photosynthesis occur in the: Stroma Thylakoid membrane Inner mitochondrial membrane Cytoplasm Answer: Thylakoid membrane 30) The primary purpose of fermentation is to: Regenerate NAD+ so that glycolysis can continue. Answer: Regenerate NAD+ so that glycolysis can continue.