Photosynthesis and Cellular Respiration Quiz

What is the primary purpose of photosynthesis in plants?

• To produce oxygen for humans

• To absorb water from the soil

• To make food for the plant

• To generate heat energy

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What are the two main stages of photosynthesis?

• Glucose production and ATP synthesis

• Light-dependent reactions and light-independent reactions

• Carbon fixation and oxygen release

• Aerobic and anaerobic respiration

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Which organelle is known as the powerhouse of the cell?

• Ribosome

• Mitochondria

• Chloroplast

• Nucleus

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What is the main byproduct of photosynthesis?

• Water

• Oxygen

• Glucose

• Carbon dioxide

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What is the role of chlorophyll in photosynthesis?

• To absorb carbon dioxide

• To capture light energy

• To transport water

• To produce glucose

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What percentage of the world's biomass is made up by plants?

• 70%

• 80%

• 60%

• 50%

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What is the main source of carbon for building plant biomass?

• Water

• Soil

• Sunlight

• Air

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What is the main difference between aerobic and anaerobic respiration?

• Anaerobic respiration occurs only in animals

• Anaerobic respiration produces more ATP

• Aerobic respiration does not require glucose

• Aerobic respiration requires oxygen

What is the main function of ATP in cells?

• To transport nutrients

• To provide structural support

• To store and transfer energy

• To store genetic information

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What is a significant advantage of using biofuels over fossil fuels?

• Biofuels do not contribute to an increase in atmospheric CO2

• Biofuels are cheaper to produce

• Biofuels release no carbon dioxide

• Biofuels are more energy-dense

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