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Review

Review. 1. Tissue___. B. A. Group of organs working together to perform specialized tasks. 2. Organ ___. C. B. Group of similar cell that work together to carry out the same function. 3. System ___. A. C. Groups of tissues organized into a structural and functional unit. A. D. B. C.

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Review

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  1. Review 1. Tissue___ B A. Group of organs working together to perform specialized tasks. 2. Organ ___ C B. Group of similar cell that work together to carry out the same function. 3. System ___ A C. Groups of tissues organized into a structural and functional unit.

  2. A D B C

  3. The LEAF is an example of a/an • Organ • Tissue • System • The leaf is a collection of tissues whose main purpose is to carry out or support the process of photosynthesis. There are special organelles responsible for this. What are the organelles called? CHLOROPLASTS

  4. C3.2 Photosynthesis **Anything this colour, do NOT copy. It’s just for review or interest!  Click on the word Photosynthesis, above, and go to “Illuminating Photosynthesis.” Explore the interactive video.

  5. PHOTOSYNTHESIS is defined as the synthesis of chemical compounds with the aid of radiant energy and especially light. • Photo means light • Synthesis means to make • It is a chemical reaction performed during the day by producers only.

  6. It takes place in an organelle unique to plants, called the CHLOROPLAST.

  7. Nature of light • Wavelength • Electromagnetic spectrum • 380 to 750 nm (visible light) • photon

  8. Photopigments • Chlorophyll a & b • accessory pigments • E.g.: carotenoids & xanthophylls

  9. Interactions of light with chloroplast

  10. Can you identify the different organelles in the cell below?

  11. Chloroplasts contain the green pigment, CHLOROPHYLL. • The chlorophyll, found in the thylakoids of the chloroplast, absorbs light energy and stores it as chemical energy in glucose.

  12. CELLULAR RESPIRATION is a reaction performed both day and night by both producers and consumers • It is the process by which plants and animals convert the stored energy in their food (glucose) to usable energy to carry out cellular functions.

  13. Cellular Respiration begins in the cytoplasm but ends in the mitochondria • What is the word equation for cellular respiration?

  14. Gas Production • Photosynthesis produces O2(g) • Cellular respiration produces CO2(g) • Photosynthesis may only occur in the presence of light, so it must happen during the day. • Cellular respiration may occur at all times.

  15. Test Your Knowledge 1. Photosynthesis requires: -chlorophyll -sunlight – what colour of light will not work? -water -CO2 2. Photosynthesis produces: -O2 (oxygen gas) -C6H1206 (glucose) 3. Online Quiz

  16. Assignment • Read pp. 303-308 • C&R pg 308 #1-5, 7, 8

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