Transcript Anaerobic Respiration

How do organisms make ATP
if no oxygen is available?
Food is ingested
Food is modified- broken
down
Is Oxygen Present to
accept electrons?
Aerobic
Respiration
YES!
i. Kreb’s Cycle
ii. Electron Transport Chain
NO!
Anaerobic
Respiration
Fermentation
• Lactate
• Ethanol + CO2
Anaerobic Respiration
0 No oxygen is present to accept electrons
0 NAD+ is the major output that continues
production of ATP.
0 SO HOW IN THE WORLD IS ATP MADE?
Glycolysis Review
0 Very Important Process for making ATP
0 Review: converts Glucose  Pyruvate + 2 ATP (net)
0 Used by virtually ALL organisms to produce ATP
0 Does NOT require oxygen
Lactic Acid Fermentation
0 Who uses this process?
0 Your Muscle Cells
0 Bacteria such as Lactobacilli
0 Some Fungi
0 Inputs: Pyruvate and NADH
0 Outputs: lactic acid and NAD+
0 NAD+ re-enters glycolysis to make ATP
0 SLOW PROCESS but still gaining ATP
Fermentation