Question

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 ____________ .

Answer 1

Answer:

The correct answer is - photosystem II; ATP; water; oxygen

Explanation:

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.