1. Introduction to Cellular Respirationpp

2. 6O2 + C6H12O6 → 6CO2+ 6 H2O +
energy

4. Path is determined by presence of oxygen
If O2 is absent then anaerobic respiration occurs in the cytoplasm
If O2 is present then aerobic respiration occurs in the mitochondrion

5. (with oxygen) (without oxygen)
aerobic stage anaerobic stage
(with oxygen) (without oxygen)

6. Anaerobic Stage (no O2): begins with glycolysis

7. Glycolysis Occurs in cytoplasm near mitochondria
Results in 2 molecules of ATP and 2 molecules of NADH
Glucose  2 Pyruvic acids (pyruvate)

8. Glucose  Pyruvic acid ethyl alcohol/
Fermentation
Glucose  Pyruvic acid ethyl alcohol/
lactic acid
alcoholic fermentation: conversion to ethyl alcohol + 2 ATP (yeast)
Lactic acid fermentation: conversion to lactic acid + 2 ATP (muscles)