Aerobic Respiration Account

STAGE 1

• Glycolysis.

• Fully anaerobic and only stage of fermentation

• Occurs in cytosol Of mitochondrion

• Glucose splits and forms pyruvic acid

• Intermediate compound of anaerobic and aerobic stages of aerobic respiration

• Low release of energy because of low levels of adenosine triphosphate ( ATP ) released

• Stage 2 occurs if there is oxygen.

STAGE 2

• Fully aerobic

• Occurs in lumen of mitochondrion

• Pyruvic acid loses a molecule of CO2 ( it is released ) and converts to acetyl co enzyme A

• Acetyl co enzyme A enters the Krebs cycle where it is broken down producing CO2, ATP, 2e-, H+

-CO2 is released into the atmosphere

-ATP traps and transfers energy needed for cell activities

-NAD+ traps 2 high energy electrons and a proton to form NADH

ELECTRON TRANSPORT SYSTEM

• Aerobic, occurs in cristae of mitochondrion, with a high energy release

• NADH releases high energy electron pair and they get passed along protein carriers

• Electrons lose energy

• ADP traps energy and adds a phosphate to form ATP

• At the end of the system, the now low energy electron pair are transferred to oxygen and protons to form water

• Oxygen is the last acceptor