Photosynthesis and Cellular Respiration

PhotosynthesisThe process in

which organisms use water along with sunlight and carbon dioxide to make food

What performs photosynthesis?Autotrophs-an organism that can

“make” its own foodExamples of Autotrophs include:

Algae-a simple nonflowering plant that is often unicellular

Phytoplankton-microscopic plants that drift or float in the sea or in fresh water

And of course….PLANTS!

How does photosynthesis work?INPUTSSunlight- absorbed by chlorophyll6 Water Molecules

6 Carbon Dioxide Molecules

How does photosynthesis work?OUTPUTS1 molecule of Glucose6 molecules of O2

All together: Are both sides even for each element?

+

+=

Written and Chemical Formula for Photosynthesis

Carbon dioxide + water+ sunlight glucose +oxygen

6CO2 + 6H20 + sunlightC6H12O6 + 6O2

Cellular Respiration

How glucose (a simple sugar) is broken down in the mitochondria for energy

Cellular Respiration occurs after photosynthesis

Powerhouse-Mitochondria break things down, like our digestive system

If we already have glucose, why do we need cellular respiration?

Glucose has to be broken down into ATP: an energy source that plants and humans can use

Glucose is stored until it’s needed!

Written and Chemical Formula for Cellular Respiration

Glucose + Oxygen Carbon Dioxide + Water + Energy (ATP)

C6H12O6+ 6O2 6CO2 + 6H2O + ENERGY (ATP)

Cellular Respiration: in plants and animals

Photosynthesis and Cellular RespirationPhotosynthesis releases oxygen

into the air so we all can survivePhotosynthesis also gives us

glucose when we eat a plantThis energy is then turned into a

usable form through cellular respiration

Photosynthesis and Cellular Respiration

http://www.youtube.com/watch?v=JUmT24R8CyA