Overview of Photosynthesis B-3.1 Summarize the overall process by which photosynthesis converts solar energy into chemical energy and interpret the chemical.

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Presentation transcript:

Overview of Photosynthesis B-3.1 Summarize the overall process by which photosynthesis converts solar energy into chemical energy and interpret the chemical equation for the process.

Overview of Photosynthesis KEY CONCEPT The overall process of photosynthesis produces sugars that store chemical energy.

Overview of Photosynthesis Photosynthetic organisms are producers. Producers make their own source of chemical energy. Plants use photosynthesis and are producers. Photosynthesis captures energy from sunlight to make sugars.

Overview of Photosynthesis Chlorophyll is a molecule that absorbs light energy. chloroplast leaf cell leaf In plants, chlorophyll is found in organelles called chloroplasts.

Overview of Photosynthesis Photosynthesis in plants occurs in chloroplasts. Photosynthesis takes place in two parts of chloroplasts. –grana (thylakoids) –stroma chloroplast stroma grana (thylakoids)

Overview of Photosynthesis The light-dependent reactions capture energy from sunlight. –take place in thylakoids –water and sunlight are needed –chlorophyll absorbs energy –two energy storing molecules (ATP and NADPH) are produced. –The solar energy is used to split water molecules which results in the release of oxygen as a waste product.

Overview of Photosynthesis The light-dependent reactions produce ATP. –hydrogen ions flow through a channel in the thylakoid membrane –ATP synthase attached to the channel makes ATP

Overview of Photosynthesis

The light-independent reactions make sugars. –take place in stroma –needs carbon dioxide from atmosphere –use energy to build a sugar in a cycle of chemical reactions

Overview of Photosynthesis

The equation for the overall process is: 6CO 2 + 6H 2 O  C 6 H 12 O 6 + 6O 2 C 6 H 12 O 6 granum (stack of thylakoids) thylakoid sunlight 1 six-carbon sugar 6H 2 O 6CO 2 6O 2 chloroplast energy stroma (fluid outside the thylakoids)

Overview of Photosynthesis Photosynthesis Quiz on Monday!! Not open note!! You must memorize the equation for photosynthesis. Also includes 7 multiple choice questions.

Overview of Photosynthesis CW Complete 4.1 in the Study Guide HW Complete 4.2 in the Study Guide.