Glossary 2.7

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The glossary provides definitions and explanations of key terms and concepts essential to understand the topic in the lesson. Be sure to familiarize yourself with each term before attempting the lesson glossary quiz.
Browse the glossary using this index

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P

Photoautotroph

an organism that makes its own food using energy from the Sun

Photosystem I

a collection of pigment proteins that includes chlorophyll a and absorbs light at the 700 nm wavelength

Photosystem II

a collection of pigment proteins that includes chlorophyll a and absorbs light at the 680 nm wavelength

Primary electron acceptor

a molecule capable of accepting electrons and becoming reduced during photosynthesis