CELLULAR RESPIRATION

What is cellular respiration? ð The process by which cells break down simple food molecules (glucose) to release energy.

Glucose

What is the chemical formula for cellular respiration?

REACTANTS PRODUCTS

C6H12O6 + 6 O2 à 6 CO2 + 6 H2O

Glucose Oxygen Carbon Water Dioxide

Water Carbon Dioxide Oxygen Glucose

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What are the two stages of cellular respiration?

ð 1st Stage – Occurs in the cytoplasm No oxygen is involved (anaerobic) Very little energy is released ð 2nd Stage – Occurs in mitochondria Oxygen is involved (aerobic) Lots of energy is released

What is the difference between photosynthesis and respiration?

ð Cellular respiration & photosynthesis can be thought of as opposite processes.

ð All organisms do cellular respiration! Only plants and some protists do photosynthesis.

What is fermentation?

ð Bacteria do not have mitochondria therefore can only do the 1st stage of cellular respiration.

ð The 1st stage of cellular respiration is called fermentation.

Also called anaerobic respiration. (without oxygen)

Types of Fermentation ! Alcohol Fermentation occurs in yeast

cells ! Lactic Acid Fermentation occurs in

muscle cells in the body