The energy for photosynthesis is captured from which source?

Prepare for the Leaving Certificate Photosynthesis exam. Use flashcards and multiple choice questions with hints and explanations. Ace your exam!

Multiple Choice

The energy for photosynthesis is captured from which source?

Explanation:
Energy for photosynthesis comes from sunlight. Plants use chlorophyll to absorb light, and this light energy excites electrons, driving the light-dependent reactions. In these reactions, water is split to supply electrons and protons, producing oxygen as a byproduct, while ATP and NADPH are formed to carry energy into the next stage. The energy stored in ATP and NADPH powers the Calvin cycle, where carbon dioxide is fixed into sugars. Water is essential as a reactant, but not the energy source, and oxygen is released rather than used as energy. Soil nutrients support growth but don’t provide the energy for the process.

Energy for photosynthesis comes from sunlight. Plants use chlorophyll to absorb light, and this light energy excites electrons, driving the light-dependent reactions. In these reactions, water is split to supply electrons and protons, producing oxygen as a byproduct, while ATP and NADPH are formed to carry energy into the next stage. The energy stored in ATP and NADPH powers the Calvin cycle, where carbon dioxide is fixed into sugars. Water is essential as a reactant, but not the energy source, and oxygen is released rather than used as energy. Soil nutrients support growth but don’t provide the energy for the process.

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