1 / 11

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

KEY CONCEPT The overall process of photosynthesis produces sugars that store chemical energy. Objectives. Relate producers to photosynthesis. Describe the process of photosynthesis. Vocabulary. Photosynthesis

burtf
Download Presentation

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

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. KEY CONCEPTThe overall process of photosynthesis produces sugars that store chemical energy.

  2. Objectives • Relate producers to photosynthesis. • Describe the process of photosynthesis.

  3. Vocabulary • Photosynthesis • Process by which light energy is converted to chemical energy; produces sugar and oxygen from carbon dioxide and water. • Chlorophyll • Light-absorbing pigment molecule in photosynthetic organisms. • Thylakoid • Membrane-bound structure within chloroplasts that contains chlorophyll and other light-absorbing pigments used in the light-dependent reactions of photosynthesis.

  4. Vocabulary • Light-Dependent Reactions • Part of photosynthesis that absorbs energy from sunlight and transfers energy to the light-independent reactions. • Light-Independent Reactions • Part of photosynthesis that uses energy absorbed during the light-dependent reactions to synthesize carbohydrates.

  5. 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.

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

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

  8. The light-dependent reactions capture energy from sunlight. • take place in thylakoids • water and sunlight are needed • chlorophyll absorbs energy • energy is transferred along thylakoid membrane then to light-independent reactions • oxygen is released

  9. 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

  10. granum (stack of thylakoids) 1 chloroplast sunlight 6H2O 6O2 2 energy thylakoid stroma (fluid outside the thylakoids) 6CO2 1 six-carbon sugar C6H12O6 3 4 • The equation for the overall process is: 6CO2 + 6H2O  C6H12O6 + 6O2

  11. Question/Answer • Describe the importance of producers and photosynthesis. • Photosynthesis enables producers to capture energy from sunlight and make sugars that store chemical energy. The food produced becomes a source of energy for nonproducers. • Where do the light-dependent and light-independent reactions occur? • Thylakoid membranes, stroma • What are the reactants and the products in photosynthesis? • The reactants are carbon dioxide and water. The products are oxygen and sugar.

More Related