Question

Which of the following statements correctly describe an aspect of converting light to chemical Choose one or more:

A. Photosystem II is used to produce NADPH directly from NADP+ and two electrons.
B. Excited electrons are passed through an electron transport chain.
C. The energy in excited electrons is used to pump protons across the thylakoid membrane from the stroma to the thylakoid space.
D. Light excites electrons in photosystem II only.

Answer 1

The initial source of electrons for the chloroplast electron transport chain is photosystem II (PSII).

Step-by-step explanation:

When photons strike photosystem II (PSII), pigments pass the light energy to chlorophyll molecules that excite electrons, which are then passed to the electron transport chain. The cytochrome complex transfers protons across the thylakoid membrane and transfers electrons from PSII to photosystem I (PSI). The products of the light-dependent reaction are used to power the Calvin cycle to produce glucose.