Multiple Choice
Which process is most directly driven by light energy?
9. Quantum Mechanics
The Energy of Light
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What is the source of energy that provides the boost for electrons during photosynthesis?
A
ATP hydrolysis
B
Sunlight
C
Heat from the environment
D
Chemical bonds in glucose
Verified step by step guidance1
Understand that photosynthesis is the process by which green plants, algae, and some bacteria convert light energy into chemical energy stored in glucose.
Recognize that the energy required to drive the photosynthesis process comes from sunlight, which is absorbed by chlorophyll in the chloroplasts of plant cells.
Identify that sunlight provides the energy needed to excite electrons in chlorophyll molecules, initiating the light-dependent reactions of photosynthesis.
Note that during these light-dependent reactions, the excited electrons are transferred through a series of proteins in the thylakoid membrane, known as the electron transport chain.
Acknowledge that the energy from these excited electrons is used to produce ATP and NADPH, which are then used in the Calvin cycle to synthesize glucose from carbon dioxide and water.
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