Unit 4- Energy and Life

Describe the role of chlorophyll in the process of photosynthesis.

• It absorbs carbon dioxide from the atmosphere.

• It absorbs light energy to convert it into chemical energy.

• It releases oxygen as a byproduct.

• It provides water to the plant cells.

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DOK Level 1: Recall

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Which of the following best describes the process of cellular respiration?

• It converts light energy into chemical energy.

• It breaks down food molecules to release energy.

• It absorbs carbon dioxide and releases oxygen.

• It stores energy in the form of glucose.

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DOK Level 1: Recall

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Explain how the Laws of Conservation of Mass and Energy apply to living systems.

• Mass and energy are created during photosynthesis.

• Mass and energy are destroyed during cellular respiration.

• Mass and energy are neither created nor destroyed, only transformed.

• Mass and energy are only conserved in non-living systems.

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DOK Level 2: Skill/Concept

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Which of the following is a direct product of photosynthesis?

• Carbon dioxide

• Oxygen

• Water

• Nitrogen

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DOK Level 1: Recall

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During cellular respiration, which molecule is primarily broken down to release energy?

• Oxygen

• Glucose

• Water

• Chlorophyll

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DOK Level 1: Recall

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Using evidence, explain how photosynthesis and cellular respiration are interconnected in the carbon cycle.

• Photosynthesis releases carbon dioxide, which is used in cellular respiration.

• Photosynthesis and cellular respiration are unrelated processes.

• Photosynthesis uses carbon dioxide, which is released during cellular respiration.

• Cellular respiration produces glucose, which is used in photosynthesis.

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DOK Level 3: Strategic Thinking

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What is the primary function of cellular respiration in living organisms?

• To produce oxygen

• To store energy in the form of ATP

• To absorb sunlight

• To create glucose

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DOK Level 1: Recall

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Cite evidence to support the claim that energy is conserved in cellular respiration.

• Energy is lost as heat and cannot be recovered.

• Energy is transformed from chemical energy in glucose to ATP.

• Energy is created from carbon dioxide and water.

• Energy is only conserved in photosynthesis.

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DOK Level 3: Strategic Thinking

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Which of the following is a byproduct of cellular respiration?

• Oxygen

• Glucose

• Carbon dioxide

• Chlorophyll

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DOK Level 1: Recall

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Explain the difference between a scientific theory and a scientific law, providing an example of each.

• A theory is a proven fact, while a law is a hypothesis.

• A theory explains why phenomena occur, while a law describes how they occur; for example, the theory of evolution and the law of gravity.

• A theory is a guess, while a law is a proven fact.

• A theory and a law are the same, with different names.

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DOK Level 2: Skill/Concept

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