Cellular Respiration – Aerobic, Anaerobic, & Fermentation

Cellular Respiration – Aerobic, Anaerobic, & Fermentation Mr. Banwart Biology

Photosynthesis & Respiration

Oxygen & Cellular Respiration • Cellular respiration has 2 paths • Aerobic • With oxygen present • Anaerobic • without oxygen present Cellular Respiration Aerobic Anaerobic Glycolysis Krebs Cycle Fermentation electron chain

Aerobic • If oxygen is present… • Glycolysis runs and the products are moved onto the Krebs cycle & the electron transport chain

Anerobic • If oxygen is not present… • Glycolysis can continue through the process of fermentation • 2 types • Lactic • alcoholic

Lactic Acid Fermentation • Lactic acid fermentation • Used by most organisms to produce ATP without the presence of oxygen

Alcoholic Fermentation • Alcoholic fermentation • Used by yeast and some other microorganisms • This process is used to make alcoholic drinks

Fermentation and an oxygen debt • Lactic fermentation can only provide so much energy… • After 90 seconds, oxygen must be used to create more ATP • This is why you huff and puff after longer exercises • Your body is trying to get enough oxygen to replenish ATP stores

Graph Reading and analysis • Use the graph to answer the following questions

Graph Reading and analysis • As the exercise difficulty increased, what happened to oxygen uptake?

Graph Reading and analysis • Between what level of difficulty did the uptake reach 2?

Cellular Respiration – Aerobic, Anaerobic, & Fermentation