Plant Cells Do Now:

The opposite of what happens in a mitochondria: Photosynthesis

Where does it all happen? The Chloroplasts! (In eukaryotes, anyway) Don’t Forget The video

Chloroplasts Absorb Light Energy

Free-living chloroplasts? Not quite… Chloroplast (from eukaryotic plant cell) Cyanobacterium (prokaryote)

Other Plastids

The Big Picture Chloroplasts build organic molecules by REDUCING the number of oxygen atoms bonded to carbon, using light energy. Mitochondria add oxygen to carbon when they break it down, by OXIDIZING it. This is called aerobic respiration

Reduced Compounds = FOOD Reduced compounds contain a lot of energy, and fewer C-O bonds. example: (octane / gasoline) CH 3 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 3 example: (glucose) C 6 H 12 O 6 Oxidized compounds contain less energy, and more C-O bonds. example: (carbon dioxide) CO 2

What else is so special about plant cells? Large, Central Vacuoles can take up most of The cell! It stores water, And some minerals

Anything Else? Yup – The Cell Wall

When you hear “Plant Cell Wall,” think Cellulose!