Where do the electrons that are excited in photosystem II come from?

The component of the electromagnetic spectrum that allows our eyes to visualize color is:

A photon is an example of _________ energy. Photons have ________ energy at short wavelengths and _________ energy at long wavelengths.

Examples of accessory pigments for photosynthesis are:

Which of the following pigments does NOT absorb yellow/orange light (650-750nm)?

Describe the primary function of the light reactions of photosynthesis.

During the light reactions, photosystem I functions to_________, and photosystem II functions to __________.

What is the correct order of steps of the light reactions of Photosynthesis?