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The Chloroplast. Unit 4: Energize Your Life. Chloroplasts. Chloroplasts are found in the cells of plants. Chloroplasts absorb light energy and make food through photosynthesis. Photosynthesis. Reactants: water and carbon dioxide Products: glucose and oxygen
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The Chloroplast Unit 4: Energize Your Life
Chloroplasts • Chloroplasts are found in the cells of plants. • Chloroplasts absorb light energy and make food through photosynthesis.
Photosynthesis • Reactants: water and carbon dioxide • Products: glucose and oxygen 6CO2 + 6H2O + light C6H12O6 + 6O2
Chlorophyll • Chloroplasts contain a pigment called chlorophyll. • A pigment is a light-absorbing molecule. • Chlorophyll reflects green light and absorbs all other colors of light.
Thylakoids • Chloroplasts contain sack-like photosynthetic membranes called thylakoids. • Thylakoids are arranged in stacks called grana. • The light-dependent reactions occur in the thylakoids.
Stroma • The area outside the thylakoids is called the stroma. • The light-independent reactions occur in the stroma.