Biology Unit 3 Review

Which organelle is primarily responsible for carrying out photosynthesis in plant cells?

• Mitochondria

• Chloroplast

• Nucleus

• Ribosome

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NGSS.HS-LS1-5

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What is the main function of enzymes in biological reactions?

• To provide energy

• To speed up chemical reactions

• To store genetic information

• To transport oxygen

What is the primary purpose of cellular respiration in cells?

• To produce glucose

• To release oxygen

• To convert glucose into usable energy in the form of ATP

• To store energy in the form of fat

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NGSS.HS-LS1-7

Which of the following is a product of cellular respiration?

• Glucose

• Oxygen

• Carbon dioxide

• Sunlight

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NGSS.HS-LS1-7

Which macromolecule is primarily responsible for storing genetic information?

• Carbohydrates

• Proteins

• Nucleic acids

• Lipids

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Which process converts atmospheric nitrogen (N2) into a form usable by plants?

• Photosynthesis

• Nitrogen fixation

• Cellular respiration

• Denitrification

Which stage of the carbon cycle involves plants absorbing carbon dioxide from the atmosphere?

• Decomposition

• Photosynthesis

• Combustion

• Respiration

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NGSS.HS-LS1-5

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Which of the following best describes the relationship between photosynthesis and cellular respiration?

• Both processes produce glucose

• Photosynthesis stores energy, while cellular respiration releases it

• Both processes occur only in animals

• Cellular respiration produces oxygen, photosynthesis uses it

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NGSS.HS-LS1-7

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Why are enzymes considered specific in their action?

• They can work with any substrate

• Each enzyme only catalyzes one type of reaction due to its unique active site

• They are made of lipids

• They are only found in plants

What is the balanced chemical equation for cellular respiration?

• C₆H₁₂O₆ + 6O₂ --> 6CO₂ + 6H₂O + Energy (ATP)

• 6CO₂ + 6H₂O --> C₆H₁₂O₆ + 6O₂

• C₆H₁₂O₆ + 6CO₂ --> 6O₂ + 6H₂O + Energy (ATP)

• 6O₂ + 6H₂O --> C₆H₁₂O₆ + Energy (ATP)

Tags

NGSS.HS-LS1-7