Big Idea #2: Energy is needed to do stuff.

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Presentation transcript:

Big Idea #2: Energy is needed to do stuff. Photosynthesis Big Idea #2: Energy is needed to do stuff.

Essential Knowledge 2A2: Organisms capture and store free energy for use in biological processes.

Producers: Phototrophs Use free energy solar radiation to produce sugar (PS) Plants, Algae (Phytoplankton), Bacteria

PS Occurs in Chloroplasts Found in all green parts Most abundant in mesophyll cells Chlorophyll: green pigment that captures free energy sunlight.

Chloroplast Structure Thylakoids are membrane-bound discs Outside fluid is called the stroma Contained in a double membrane

Chloroplast x5,755

Producers: Chemotrophs Capture free energy from small inorganic molecules (H2S) to produce sugars (chemosynthesis) Can occur w/out O2. Bacteria

Made foundation for eukaryotic PS. Evolution of PS Started in prokaryotic cells (bacteria) and created an oxygenated atmosphere. rRNA analysis Made foundation for eukaryotic PS.

Mr. Anderson PS Video Clip Chloroplast Diagram PS Cloze Activity!

Review of Calvin Cycle http://www.science.smith.edu/departments/Biology/Bio231/calvin.html http://www.youtube.com/watch?v=OYSD1jOD1dQ