Multiple Choice
How much energy is contained in one mole of X-ray photons with a wavelength of 0.280 nm in kJ/mol?
9. Quantum Mechanics
The Energy of Light
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In photosynthesis, what is the energy of a photon first used to do?
A
Convert carbon dioxide into oxygen
B
Break down glucose molecules
C
Excite electrons in chlorophyll
D
Synthesize ATP directly
Verified step by step guidance1
Understand the role of chlorophyll in photosynthesis: Chlorophyll is a pigment found in the chloroplasts of plant cells. It plays a crucial role in capturing light energy from the sun.
Learn about the absorption of light energy: When chlorophyll absorbs light, it uses the energy to excite electrons. This is the initial step in the process of photosynthesis.
Explore the concept of electron excitation: Excited electrons are those that have absorbed energy and moved to a higher energy level. This is essential for the subsequent steps in photosynthesis.
Recognize the importance of electron excitation: The excited electrons are used to initiate a series of reactions that ultimately lead to the synthesis of ATP and NADPH, which are energy carriers in the cell.
Connect electron excitation to the overall process: The excitation of electrons in chlorophyll is the first step that drives the entire photosynthetic process, leading to the conversion of light energy into chemical energy.
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