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What is the primary purpose of cellular respiration?
- A. To produce glucose
- B. To convert glucose into ATP
- C. To release oxygen
- D. To store energy as starch
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Which molecule is often referred to as the energy currency of the cell?
- A. ADP
- B. NADH
- C. ATP
- D. FADH2
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In which part of the cell does glycolysis occur?
- A. Mitochondria
- B. Cytoplasm
- C. Nucleus
- D. Endoplasmic Reticulum
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During aerobic respiration, which gas is produced as a waste product?
- A. Nitrogen
- B. Carbon Dioxide
- C. Methane
- D. Hydrogen
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What is the role of oxygen in cellular respiration?
- A. It helps in glycolysis
- B. It acts as a final electron acceptor in the electron transport chain
- C. It provides energy directly
- D. It is used to produce glucose
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Which process occurs in the mitochondria?
- A. Glycolysis
- B. Krebs cycle
- C. Fermentation
- D. Lactic acid production
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Which of the following is NOT a product of photosynthesis?
- A. Glucose
- B. Oxygen
- C. Water
- D. Carbon Dioxide
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What is the name of the pigment primarily involved in photosynthesis?
- A. Chlorophyll
- B. Hemoglobin
- C. Carotene
- D. Melanin
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In which cellular organelle does photosynthesis take place?
- A. Mitochondria
- B. Chloroplast
- C. Ribosome
- D. Golgi apparatus
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What is the overall equation for photosynthesis?
- A. 6CO2 + 6H2O → C6H12O6 + 6O2
- B. C6H12O6 + 6O2 → 6CO2 + 6H2O
- C. C6H12O6 + 6O2 → energy + 6H2O
- D. 6CO2 + 6H2O → energy + 6O2
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Which process generates the most ATP in cellular respiration?
- A. Glycolysis
- B. Krebs cycle
- C. Electron transport chain
- D. Fermentation
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What is the byproduct of alcoholic fermentation?
- A. Lactic acid
- B. Ethanol
- C. Glucose
- D. Carbon Dioxide
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Which of the following statements is true regarding ATP?
- A. It is unstable and short-lived
- B. It contains four phosphate groups
- C. It is produced during photosynthesis only
- D. It does not play a role in cellular processes
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What is the role of NAD+ in cellular respiration?
- A. It is the main energy molecule
- B. It carries electrons to the electron transport chain
- C. It provides glucose
- D. It is involved in protein synthesis
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In photosynthesis, which reactant is used during the Calvin cycle?
- A. Glucose
- B. Oxygen
- C. Carbon Dioxide
- D. Water
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Which stage of cellular respiration produces carbon dioxide?
- A. Glycolysis
- B. Krebs cycle
- C. Lactic acid fermentation
- D. Electron transport chain
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Where does the light-dependent reaction of photosynthesis occur?
- A. Thylakoid membranes
- B. Stroma
- C. Cytoplasm
- D. Chloroplast matrix
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What role does ATP synthase play in cellular respiration?
- A. It transports electrons
- B. It helps produce ATP
- C. It breaks down glucose
- D. It captures light energy
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Which factor does NOT affect the rate of photosynthesis?
- A. Light intensity
- B. Temperature
- C. Availability of water
- D. Color of leaves
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What is the primary purpose of the Calvin cycle in photosynthesis?
- A. To produce glucose
- B. To capture sunlight
- C. To split water molecules
- D. To create oxygen
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How many ATP molecules are produced during glycolysis?
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What type of organism utilizes photosynthesis for energy?
- A. Herbivores
- B. Carnivores
- C. Decomposers
- D. Autotrophs
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Which of the following statements is correct about aerobic vs anaerobic respiration?
- A. Aerobic respiration occurs without oxygen; anaerobic requires oxygen.
- B. Aerobic respiration produces less energy than anaerobic respiration.
- C. Aerobic respiration is more efficient in generating ATP than anaerobic respiration.
- D. Anaerobic respiration generates more ATP than aerobic respiration.
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Which product of photosynthesis is essential for cellular respiration?
- A. Glucose
- B. Ethanol
- C. Lactic acid
- D. Oxygen
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What is the energy used during the Calvin cycle derived from?
- A. NADH and FADH2
- B. ATP and NADPH
- C. Glucose breakdown
- D. Light energy
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Which nucleotide is the precursor to ATP?
- A. GDP
- B. AMP
- C. UMP
- D. ADP
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What is the difference between cellular respiration and fermentation?
- A. Fermentation requires oxygen; cellular respiration does not.
- B. Cellular respiration is more efficient than fermentation in producing ATP.
- C. Fermentation occurs only in plant cells.
- D. Cellular respiration does not produce waste products.
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In terms of energy flow, which of the following statements is true?
- A. Energy is recycled within an ecosystem.
- B. Energy is lost as it flows through the ecosystem.
- C. Energy does not enter ecosystems in any form.
- D. Energy is gained at each trophic level.
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Chlorophyll primarily absorbs which wavelengths of light?
- A. Red and blue light
- B. Green and yellow light
- C. Infrared light
- D. Ultraviolet light
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Which of the following is a similarity between cellular respiration and photosynthesis?
- A. Both produce ATP
- B. Both occur in plants only
- C. Both use glucose as a reactant
- D. Both involve the same biochemical pathways