Lesson plan powerpoint upload

Lesson plan powerpoint upload

• 1.
  + Photosynthesis: Convertingsunlight into chemical energy Students who demonstrate understanding can: HS-LS1-5: Use a model to illustrate how photosynthesis transforms light energy into stored chemical energy.
• 2.
  + Where doesthe oxygen (O2) we breathe come from?  O2 is produced by different kinds of bacteria, algae, and plants (including trees) during photosynthesis.  About 25% of O2 comes from land plants.  Most of Earth’s O2 comes from the ocean.  Released from tiny ocean plants called, phytoplankton.
• 3.
  + Autotrophs andPhotosynthesis  Called “self feeders” or ”producers”.  Organisms that can produce their own food using light, water, carbon dioxide, or other chemicals.  Examples of autotrophs: green plants, some algae, few bacteria.  Most autotrophs use photosynthesis to make their food.
• 4.
  + Overview ofPhotosynthesis  Light energy gets converted into chemical energy.  Chemical energy is stored in the form of glucose (sugar).  Carbon dioxide, water, and sunlight are used to produce carbohydrates and oxygen.  Occurs in two stages:  Light Dependent Reactions  Light Independent Reactions https://www.youtube.com/wa tch?v=1XilneV3cJI
• 5.
  + Where DoesPhotosynthesis Take Place in the Cell?
• 6.
  + Chloroplast Anatomy:
• 7.
  + Closer Lookat Chloroplast Structures  Chlorophyll:  Allows plants to absorb energy from light  Gives leaves their green color  Membrane Envelope:  Inner and outer membranes  Protects and keep chloroplast structures enclosed.  Thylakoid membrane:  Internal membrane system  Flattened sac-like membrane structures called thylakoids  Serve as the sites of conversion of light energy to chemical energy.  Granum  Dense layered stacks of thylakoid sacs  Sites of conversion of light energy to chemical energy.  Stroma  Dense fluid within the chloroplast  Lies inside the envelope but outside the thylakoid membrane  Site of conversion of carbon dioxide to carbohydrates
• 8.
  + Two Processesof Photosynthesis Light Dependent Reactions Light Independent Reactions  Location: Thylakoid Membrane  Reactants: Sunlight and water (H2O)  End Products: ATP, NADPH, and O2  Also called “Calvin Cycle” or Dark Reactions  Location: Stroma  Reactants: ATP, NADPH, and O2  End Products: Glucose Remember:  Cells use ATP for energy  NADPH is a cofactor in reactions that acts as a reducing agent
• 9.
  + How DoesIt All Work?
• 10.
  + Photosynthetic Equation  Photosynthesis can be represented using a balanced chemical equation:
• 11.
  + Why isphotosynthesis essential to life on Earth? Well..  Life can be sustained in plants.  Plants provide oxygen for humans. We BREATHE oxygen!  Without oxygen we cannot survive!