EOC Review— Photosynthesis and Cellular Respiration WCH Shift A, Wednesday, April 22.

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Presentation transcript:

EOC Review— Photosynthesis and Cellular Respiration WCH Shift A, Wednesday, April 22

Photosynthesis ! carbon dioxide + water + sunlight  glucose + oxygen (waste)

Cellular Respiration! ATP Carbon dioxide (waste) Water (waste) glucose (food) + oxygen  carbon dioxide (waste) + water (waste) + ATP

What if there is not enough oxygen for cellular respiration? Fermentation happens! It is like ‘mini cellular respiration’ because it only gains 2 ATP for the cell. It does not require oxygen and it makes lactic acid or alcohol as waste.

What is this ATP molecule? It is stored energy that the cell can use when it needs ‘fuel’. To release the energy, a phosphate is broken off. The left-over molecule (ADP) can be recycled back to ATP in cellular respiration.

Why do photosynthesis and cellular respiration look opposite? They are! Autotrophs do both, so they use the products of photosynthesis for cellular respiration and they use the products of cellular respiration for photosynthesis. The overall goal is to use the sun’s energy to end up with ATP for the cells.

Heterotrophs don’t do photosynthesis, so where do they get the ‘ingredients’ for cellular respiration? From eating other organisms and from breathing!