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Photosynthesis. Chloroplasts Photosynthesis in nature Autotrophs:biotic producers; photoautotrophs; chemoautotrophs; obtains organic food without eating.

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Presentation on theme: "Photosynthesis. Chloroplasts Photosynthesis in nature Autotrophs:biotic producers; photoautotrophs; chemoautotrophs; obtains organic food without eating."— Presentation transcript:

1 Photosynthesis

2 Chloroplasts

3 Photosynthesis in nature Autotrophs:biotic producers; photoautotrophs; chemoautotrophs; obtains organic food without eating other organisms Heterotrophs: biotic consumers; obtains organic food by eating other organisms or their by-products (includes decomposers)

4 Warm-Up What are the two parts of photosynthesis? (Look in your book, pg. 93) What are the reactants? What are the products? How are the products of photosynthesis important to us?

5 The chloroplast Sites of photosynthesis Pigment: chlorophyll Plant cell: mesophyll Gas exchange: stomata Double membrane Thylakoids, grana, stroma

6 Photosynthesis A complex process in which visible sunlight is converted into chemical energy in carbohydrate molecules. Occurs within the chloroplasts of cells

7 Photosynthesis Light Reaction Occurs within the thylakoid membrane inside of the chloroplasts Light Independent Reaction (Dark Reaction) Occurs within the Stroma

8 An overview of photosynthesis

9 6CO 2 + 6H 2 0 C 6 H 12 O 6 + 6O 2 light 6CO 2 + 6H 2 0 C 6 H 12 O 6 + 6O 2 light The overall equation for photosynthesis is written as:


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