II. Anaerobic Respiration AIM: Where does anaerobic respiration happen? DO NOW: Answer questions on today’s handout HOMEWORK: 10 Multiple Choice Questions

Where might you see fermentation in day-to-day life? A. Fermentation Anaerobic respiration is fermentation! Where might you see fermentation in day-to-day life? If you ferment wheats or starches, you get alcohols. If you ferment fruits or honey, you get wine or mead. Fermentation of yeast cells in baking bread causes it to rise. We use fermentation to make cheeses and yogurts from milk.

1. Bacteria 2. Yeasts and Molds B. Organisms Some bacteria produce lactic acid, which helps make cheese, buttermilk, and yogurt. 2. Yeasts and Molds In things like bread, wine, beer, and other alcohol, you are using yeast’s anaerobic respiration to create alcohol and carbon dioxide.

3. Skeletal Muscle B. Organisms (cont’d) During long periods of exercise, muscle cells can use oxygen faster than the body can supply it. These cells then switch from aerobic respiration, to anaerobic respiration and produce lactic acid. When lactic acid builds up in the muscle tissue, you get a burning feeling and muscle fatigue. c. Once we get enough oxygen to those cells again, aerobic respiration breaks down the lactic acid.

Area Where It Occurs in the Cell Anaerobic respiration occurs in the cytoplasm of the cell. Activation Energy You have to start by converting the glucose molecule into two molecules of pyruvic acid. This requires 2 ATP to start the reaction! C GLUCOSE + 2 ATP  Pyruvic Acid

2 ATP + glucose 2 pyruvic acid 2 lactic acid + 4 ATP E. Process: Lactic Acid Formation 2 ATP + glucose 2 pyruvic acid 2 lactic acid + 4 ATP C6H12O6 2 (C3) 2 (C3) 1. Numbers of ATP a. Use 2 ATP to break down glucose e.g. - 2 ATP b. Gain 4 ATP at the end of the equation e.g. + 4 ATP c. The NET ATP at the end of lactic acid formation process is _____________. 2 ATP

2 ATP + glucose 2 pyruvic acid 2 alcohol + 2 CO2 + 4 ATP F. Process: Alcohol Formation 2 ATP + glucose 2 pyruvic acid 2 alcohol + 2 CO2 + 4 ATP C6H12O6 2 (C3) 2 (C2) Alcohol formation has ____________ amount of net ATP as lactic acid formation. the same

ANSWER THE QUESTIONS BASED ON INFO AT YOUR LAB TABLE SUMMARY ANSWER THE QUESTIONS BASED ON INFO AT YOUR LAB TABLE

Cellular Respiration begins with which can produce can be used in produces a net gain of which is broken down during which occurs in the which produces can be used in which can produce WORD BANK Lactic Acid Pyruvic Acid Glucose 2 ATP Fermentation Anaerobic Respiration Cytoplasm Alcohol

Wine Barrels

3 – 2 - 1 Name 3 things you learned about aerobic cellular respiration. Name 2 things you found interesting. Name 1 thing you still want to know about cellular respiration.