Understanding Photosynthesis and Respiration

What is the primary pigment involved in photosynthesis?

• Hemoglobin

• Chlorophyll

• Melanin

• Keratin

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Which organelle is responsible for cellular respiration in eukaryotic cells?

• Nucleus

• Mitochondrion

• Ribosome

• Chloroplast

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What is the main source of energy for photosynthesis?

• Glucose

• Sunlight

• Oxygen

• Carbon dioxide

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Which of the following is a product of photosynthesis?

• Oxygen

• Carbon dioxide

• Water

• ATP

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What is the first step in cellular respiration?

• Krebs cycle

• Glycolysis

• Electron transport chain

• Fermentation

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Which gas is taken in by plants during photosynthesis?

• Oxygen

• Nitrogen

• Carbon dioxide

• Hydrogen

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What is the main function of cellular respiration?

• To produce glucose

• To release energy from food

• To absorb sunlight

• To make proteins

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Which molecule is the main energy carrier produced during cellular respiration?

• DNA

• ATP

• RNA

• NADPH

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Which stage of cellular respiration produces the most ATP?

• Glycolysis

• Krebs cycle

• Electron transport chain

• Fermentation

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How do the processes of photosynthesis and cellular respiration complement each other in the energy cycle of living organisms?

• They both produce glucose

• They both release carbon dioxide

• One uses carbon dioxide and releases oxygen, while the other uses oxygen and releases carbon dioxide

• They both occur only in plants

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