1. Aerobic Cellular Respiration
Packet #13
Chapter #4

2. Introduction
The goal of aerobic cellular respiration is to produce energy, in the form of ATP, by breaking the foods that one eats with the use of oxygen.
ATP  Adenosine Tri- phosphate
Aerobic cellular respiration has three major steps
Glycolysis
The Kreb’s Cycle
Oxidative Phosphorylation(Electron Transport Chain)

3. Introduction II
During the processes of cellular respiration, ATP is produced via two methods
Substrate Level Phosphorylation
Oxidative Phosphorylation

4. Substrate Level Phosphorylation
The removal of phosphate, from a substrate, and adding it to ADP.
ADP + P  ATP
Requires the use of an enzyme.
Occurs during glycolysis and the Kreb’s Cycle

5. Oxidative Phosphorylation
Occurs at the electron transport chain.
Requires the use of oxygen.
Molecules known as NADH (nicotinamide adenine dinulceotide), or FADH (flavin adenine dinucleotide) are oxidized.
NADH and FADH donate electrons to the ETC and are eventually used to produce H2O from the oxygen that breathed in by the organism.

6. Oxidative Phosphorylation II
After those events have occured, ATP is produced via an underlying process known as chemiosmosis.
Chemiosmosis occurs during oxidative phosphorylation.
1 NADH  3 ATP’s
1 FADH  2 ATP’s

7. The Processes of Aerobic Cellular Respiration

8. Glycolysis
Glycolysis is a ten step process, occurring in the cytosol of the cell, that splits glucose in two molecules (pyruvate) while producing limited amounts of ATP (substrate level phosphorylation) and NADH.
Glyco – sugar
Lysis – split apart

9. The Kreb’s Cycle
The Kreb’s Cycle, occurring in the mitochondria matrix, is an eight step process that produces limited amounts of ATP (via substrate level phosphorylation), FADH and NADH.

10. Oxidative Phosphorylation
The electron transport chain is found along the inner membrane of the mitochondria and IS the location for oxidative phosphorylation.
Electrons are removed from the previously produced NADH and FADH.
The electrons, move along the chain causing hydrogen ions to move.
The hydrogen ions, that moved, drives ATP synthase to produce ATP (chemiosmosis).
1 NADH  3 ATP’s
1 FADH  2 ATP’s
Electrons removed from NADH & FADH
Electrons move along ETC
Hydrogen ions move
Hydrogen ions activate ATP synthase
ATP produced

11. Final Overview
As a result of aerobic cellular respiration a total of 36 – 38 ATP’s per glucose molecule.
4 ATP’s via substrate level phosphorylation

12. Review

13. Review Aerobic Cellular Respiration Glycolysis Location
Cytosol of Cell
Input
Glucose
Output
Pyruvate
ATP
Substrate Level Phosphorylation
NADH
Kreb’s Cycle
Mitochondria Matrix
2 FADH
Oxidative Phosphorylation
Inner Mitochondria Membrane
Includes Chemiosmosis
Large Amounts of ATP from NADH and FADH
Cell Respiration with the use of O2