1. DO NOW 11/1: FIRST: Take out SUPER-IMPORTANT cell parts chart The population of the world is now 7.0 x 10 9 ! Write in standard notation If the population of the US is 3.5 x 10 8, what % of the world population is here in the US?

2. The Basics: Chloroplasts  STRUCTURE: A bean-shaped green organelle with lots of membranes inside.  FUNCTION: Photosynthesis (capture light energy to build carbohydrates) CO 2 + H 2 O + light  CH 2 O + O 2  ***PLANTS ONLY!!!

4. The Basics: Mitochondria  STRUCTURE: A bean-shaped organelle with lots of membranes inside.  FUNCTION: Cellular Respiration (break down food to get the energy) CH 2 O + O 2  CO 2 + H 2 O + energy  ***All Eukaryotic cells, including plants

6. Mitochondria and Chloroplasts are Energy Converters  Mitochondria RELEASE the energy stored in food  Chloroplasts CAPTURE the energy of sunlight

7. Endosymbiosis  Endosymbiotic Theory: plastids (e.g. chloroplasts) and mitochondria are the descendents of once free-living prokaryotes that were internalized by a larger cell.

8. What about human technology?  Humans have developed technology that allow us to release lots of energy originally captured by ancient chloroplasts.  In other words, WE BURN FOSSIL FUELS