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Chloroplast

Chloroplast . Chloroplast . What do you remember about chloroplast? Membrane Bound Contain DNA Green (due to chlorophyll) Site of photosynthesis Endosymbiont theory. plastids. PLASTID Plant cell organelles that are involved in energy storage & synthesis of metabolic materials

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Chloroplast

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  1. Chloroplast

  2. Chloroplast • What do you remember about chloroplast? • Membrane Bound • Contain DNA • Green (due to chlorophyll) • Site of photosynthesis • Endosymbiont theory

  3. plastids • PLASTID • Plant cell organelles that are involved in energy storage & synthesis of metabolic materials • Leucoplast • Colorless plastid involved in synthesis of starch, oil, and protein • Chromoplast • Yellow to red plastid involved in manufacture of carotenoids. • Chloroplasts • Green plastids that contain chlorophyll and and chlorophyll b. Chlorophyll enables chloroplasts to absorb light energy needed for photosynthesis.

  4. Plastids continued • The variety of plastids present (number and type) is influenced by the needs of the cell. • Environmental factors contribute to the needs of the cell • What types of environmental factors would you guess effect the variety of plastids present? • How would they effect the variety of plastids present?

  5. A little more on endosymbiotic theory • What do you remember? • Chloroplasts exhibit prokaryotic traits • Circular DNA • Reproduce by binary fission

  6. Parts of a chloroplast Thylakoid Grana Stroma

  7. Parts of the chloroplast • Thylakoid • Flattened membrane sacs where the light reaction of photosynthesis takes place i • Products of the light reaction are ATP and NADPH2 • Grana • Stacks of Thylakoids • Stroma • Space between the grana. Semi-fluid material that contains dissolved enzymes. • Contains DNA, special ribosomes, and RNA • Dark reaction of photosynthesis takes place in stroma • CO2 is converted to glucose

  8. Groups of four….be sure the diagram is present in your notes Diagram the chloroplast. Label all parts and list the functions

  9. pigment • A substance that reflects lights of specific wavelengths and absorbs others • You SEE the colors that are REFLECTED • What color of light does chlorophyll reflect? • GREEN • What color of light do chromoplasts reflect? • REDandORANGE

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