During the light reactions, the pigments and proteins of use light to send energized electrons through an electron transport chain, ultimately producing (a form of energy). A molecule replaces the lost electrons, producing the byproduct .

The photosynthesis process involves two different cycles known as the light reaction and the dark reaction. In light reaction there are two photosystems; photosystem I and photosystem II.

During light reaction, there are several pigments such as chlorophyll a and other pigments present in photosystem II that trap the light and transfer excited electrons through ETC to produce ATP which is a form of energy used by cells.

A water molecule takes place of the excited electron that is transferred and releases oxygen as waste or byproduct in this reaction.

During the light reactions, the pigments and proteins of ____________ use light to send energized electrons through an electron transport chain, ultimately producing ____________ (a form of energy). A ____________ molecule replaces the lost electrons, producing the byproduct ____________ .

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During the light reactions, the pigments and proteins of use light to send energized electrons through an electron transport chain, ultimately producing (a form of energy). A molecule replaces the lost electrons, producing the byproduct .