1. Have out your homework from yesterday

3.  On your own, without looking at your notes, see if you remember the next two steps of the levels of organization (before cell):  Biosphere  Ecosystem  Community  Population  Organism  Organ System  Organ  Tissue  Cell  Molecule  Atom

4.  All matter in the universe, living and nonliving, van be broken down in to the basic substances called elements  MOST matter exists a form made up of two or more elements joined together, known as a compound  The smallest unit of any element is called an atom  Most compounds in a cell are made up of atoms bonded together in molecules

5.  Water is a compound  What are the elements that compose a water molecule? Hydrogen and Oxygen  How many atoms of each element? H=2O=1  What is another name for water? H2OH2O

6.  Most activities that take place within a cell involve atoms and molecules interacting  This is called a chemical reaction  Bonds between atoms are broken and new bonds form to make different molecules  Energy is needed to break bonds and energy is released when new bonds form

7.  ALL cells need a CONSTANT supply of energy  All cells use chemical energy  Energy stored in bonds between atoms of every molecule  Must be able to release the chemical energy to stay alive

8.  Carbohydrates  Provide the cell with energy  Simple carbs are sugars  Made from carbon, oxygen and hydrogen  Major energy source for most cells is stored in glucose  Sugar molecule  Plants make sugars, animals have to eat plants

9.  Ultimate source of energy for almost all organisms is sunlight  Plants change the energy in sunlight to a form of energy they can use– chemical energy in glucose  What is the name of this process??

10. Why do people talk to their plants?

11.  Process done by plants to convert light energy into food  The requirements for photosynthesis are:  CO 2  Sunlight  Water

12.  Leaves  Chloroplasts  Root System  Stomata

13.  Organelles of plant cells  Capture light energy to conserve/store in form of ATP Chloroplasts trap light energy

14.  Obtains water from soil, travels through stem and to leaves Water enters leaf

15.  Microscopic pores on leaves of plant  Act as gateway for efficient gas exchange  Surrounded by guard cells that open and close the pore Carbon Dioxide enters leaf through Stomata

16.  By yourself  On a half sheet of paper  What are the 3 things a plant requires from its external environment to complete photosynthesis  What are the 3 main parts of a plant that are involved in photosynthesis  Keep this piece of paper, we will need it at the end of the presentation DUE: Crossword Puzzle

17. 6 CO 2 + 6 H 2 O C 6 H 12 O 6 + 6 O 2 Photosynthesis (Formula) Light Energy

18. 6 CO 2 + 6 H 2 O C 6 H 12 O 6 + 6 O 2 CO 2 = __________ = What we breath out 6 _________ molecules

19. 6 CO 2 + 6 H 2 O C 6 H 12 O 6 + 6 O 2 H 2 O= __________ 6 __________ water molecules

20. With light energy present, the product will be… Light Energy

21. 6 CO 2 + 6 H 2 O C 6 H 12 O 6 + 6 O 2 C 6 H 12 O 6 = ____________ = sugar = organic matter or food

22.  6 CO 2 + 6 H 2 O C 6 H 12 O 6 + 6 O 2 O 2 = __________ = what we breath in 6 ________ molecules

23.  A plant absorbs light energy from the sun and combines that with carbon dioxide from the air and water from the soil. This reaction creates sugar/glucose and oxygen  The sugar/glucose is used as a food source for the plant  The oxygen is put into the air for us to breath

24. Why do people talk to their plants?

25.  Piece of paper  Colored pencils Draw a model diagram of how Photosynthesis works Include: All the resources used, where the actions are done, what resources are produced and where they end up or how they are used.

26.  EVERYONE needs to be in their own assigned desk, studying (QUIETLY and on YOUR OWN) for the quiz today by the time the bell rings.  Suggested studies:  All of the terms we have covered this far in the photosynthesis notes  I will be collecting your homework shortly after the quiz, and will be passing back your tests.