CELLULAR RESPIRATION

1. Cellular Respiration – when cells break down simple food molecules such as glucose and release the energy they contain. A molecule of glucose

CELLULAR RESPIRATION 2. Respiration Equation – C 6 H 12 O 6 + 6O 2 6CO 2 + 6H 2 O + Energy REACTANTS PRODUCTS Yields

CELLULAR RESPIRATION 3. Two Stages: 1) Stage 1 – Glucose molecules are broken down into smaller molecules in cytoplasm

CELLULAR RESPIRATION 2) Stage 2 – small molecules are broken down even smaller; requires oxygen; a lot of energy is released (in mitochondria)

CELLULAR RESPIRATION 4. Reactants of Respiration – Glucose and Oxygen

CELLULAR RESPIRATION 5. Products of Respiration – Carbon Dioxide and Water (they diffuse out of cell) and Energy ENERGY!

CELLULAR RESPIRATION 6. Photosynthesis vs. Respiration – Opposite cycles; together they form a cycle that keeps the levels of oxygen and carbon dioxide constant

CELLULAR RESPIRATION 7. Fermentation – An energy releasing process (like respiration) that does NOT require oxygen (there are 2 types)

CELLULAR RESPIRATION 1) Alcoholic – fermentation that occurs in yeast and single-celled bacteria; produces alcohols, carbon dioxide, and energy

CELLULAR RESPIRATION 2) Lactic Acid – fermentation that occurs when cells lack oxygen; a build up of lactic acid makes muscles feel weak