Multiple Choice
Which statement best describes the relationship between photosynthesis and cellular respiration?
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9. Photosynthesis
Introduction to Photosynthesis
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What type of energy does a plant use to convert \( \mathrm{CO_2} \) and \( \mathrm{H_2O} \) into sugar during photosynthesis?
A
Chemical energy
B
Mechanical energy
C
Light energy
D
Thermal energy
Verified step by step guidance1
Understand the process of photosynthesis: Photosynthesis is the process by which plants convert carbon dioxide (
) and water (
) into glucose (sugar) and oxygen using energy from sunlight.
Identify the type of energy involved: Plants use light energy, which is absorbed by chlorophyll pigments in the chloroplasts, to drive the chemical reactions of photosynthesis.
Relate light energy to the chemical reaction: Light energy is converted into chemical energy during the light-dependent reactions of photosynthesis. This energy is stored in molecules like ATP and NADPH.
Understand the role of light energy: Light energy is essential for splitting water molecules (
) into oxygen, protons, and electrons, which are then used in the synthesis of glucose.
Conclude the correct answer: Based on the process of photosynthesis, the type of energy used by plants to convert
and
into sugar is light energy.
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