Cell Respiration is the opposite of photosynthesis. – What is the equation for photosynthesis? – What is the equation for respiration. – Respiration breaks.

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Presentation transcript:

Cell Respiration is the opposite of photosynthesis. – What is the equation for photosynthesis? – What is the equation for respiration. – Respiration breaks down carbohydrates into ATP. Photosynthesis and Cell Respiration

Plants perform both photosynthesis and respiration. – Think: It would be pointless to make carbohydrates if you did not break them down into energy. Photosynthesis and Cell Respiration

Cellular Respiration Chapter 9 in the textbook

The equation for cellular respiration is catabolic. Catabolic Reactions: a chemical reaction that breaks down larger molecules into smaller units. – Catabolic reactions are exergonic: energy is released. Anabolic reaction: an endergonic reaction that builds molecules from smaller units. – Photosynthesis is an anabolic reaction. Chemical Energy and Food

Cellular Respiration is an oxidation/reduction reaction Oxidation: The loss of electrons Reduction: The gain of electrons In cellular respiration glucose is oxidized and oxygen is reduced Hydrogen is a source of electrons Chemical Energy and Food Reduction: Oxygen gains electrons (and hydrogens) Oxidation: Glucose loses electrons (and hydrogens)