Question

what happens when a chlorophyll molecule absorbs a photon? check all that apply.
check all that apply
an electron is moved to a higher energy level.
the potential energy of the molecule increases.
fluorescence occurs.
energy becomes available for the photosynthetic pathway.

Explanation:

When a chlorophyll molecule absorbs a photon:

• The energy from the photon is used to move an electron to a higher energy level. This is a fundamental process in photosynthesis as it initiates the flow of electrons.
• Since the electron is at a higher energy level, the potential energy of the molecule increases. Potential energy is stored energy, and in this case, the molecule has more stored energy due to the excited - state electron.
• Fluorescence can occur. When the electron returns to its ground state, some of the energy can be released as light (fluorescence), although this is a less common fate compared to the electron being used in the photosynthetic pathway.
• The energy from the excited electron (after absorption of the photon) can be used in the photosynthetic pathway. For example, in non - cyclic photophosphorylation, the excited electron is passed through an electron transport chain to generate ATP and NADPH.

Answer:

All of the options (An electron is moved to a higher energy level, The potential energy of the molecule increases, Fluorescence occurs, Energy becomes available for the photosynthetic pathway) are correct.