Unformatted text preview: Aerobic/Anaerobic
Respiration Elissa Seidman
Edwin Yu - The Marathon If somebody challenged you to a run a If somebody challenged you to a run a race, how should you prepare to win? 1. Practice
2. Eat the right foods
3. Drink the right liquids All living organisms break down sugars to get energy. In humans this breakdown usually occurs with oxygen. Aim:
Aim: To understand how Aerobic and Anaerobic Respiration Occurs SWBAT:
Learn how the type of sugar affects the rate of respiration.
Learn how the concentration of sugar affects the amount of energy produced.
Determine the rate of respiration while using yeast to breakdown different sugars. What is Aerobic Respiration?
The breaking down of sugar to produce energy where oxygen is present. C 6 H 12 O6 + 6O2 Enzymes → 6CO2 + 6 H 2 O + 36 ATP Glucose + Oxygen Carbon Dioxide + Water+ Energy When We Exercise…
After two minutes of exercise, the body responds by supplying working muscles with oxygen. When oxygen is present, glucose can be completely broken down into carbon dioxide and water Anaerobic Respiration refers to
the oxidation of molecules in the
absence of oxygen to produce
It is also known
It is also known
As Fermentation What happens when fermentation occurs? 1. In Muscle Cells During extraneous activities, the oxygen in the muscle tissue is decreased to an extent that aerobic respiration does not occur at a sufficient rate. Hence, there is a buildup of lactic acid and your muscles get tired 2. In Yeast The fermentation end product is ethyl alcohol, and CO2 Chemical Formula for Anaerobic Respiration
2 ATP + C 6 H 12 O6 → 2CH 3 CH 2 OH + 2CO2 + 4 ATP Enzymes Energy + Glucose → Ethanol + Carbon Dioxide + Energy Yeast Lab Experiment
We will be testing four different drinks to see which will give us the most energy So how do we decide which is
best? Hint: Go back to the formula 2 ATP + C 6 H 12 O6 Enzymes → 2CH 3 CH 2 OH + 2CO2 + 4 ATP We can measure the carbon dioxide released by each drink in the enzyme Lab Procedure
CO2 Gas Sensor to measure total concentration of CO2
CO2 Gas Sensor Lab Procedure
Lab Incubate the yeast solution in a 37 – 40 water bath Label the five test tubes G, C, F, M, and W
Pour 2.5 mL of Gatorade into the test tube labeled G Pour 2.5 mL of Coke into the test tube labeled C
Pour 2.5 mL of fruit juice into the test tube labeled F
Pour 2.5 mL of milk into the test tube labeled M
Pour 2.5 mL of water into the test tube labeled W Lightly stir the yeast suspension to mix the yeast that settled to the bottom. Put 2.5 mL of the yeast suspension into all five of the test tubes. Then incubate the test tubes for 10 minutes in the water bath. Place the Gas Sensor, and start collecting the data. for 4 minutes. This powerpoint was kindly donated to
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- Winter '08
- Cellular Respiration