Aerobic/AnaerobicAerobic/AnaerobicRespirationRespiration

Elissa SeidmanElissa Seidman

Edwin YuEdwin Yu

- The Marathon - - The Marathon -

If somebody challenged you to a If somebody challenged you to a run a race, how should you prepare run a race, how should you prepare to win? to win?

1.1. PracticePractice

2.2. Eat the right foodsEat the right foods

3.3. Drink the right liquidsDrink 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:SWBAT:

Learn how the type of sugar affects Learn how the type of sugar affects the rate of respiration.the rate of respiration.

Learn how the concentration of sugar Learn how the concentration of sugar affects the amount of energy affects the amount of energy produced.produced.

Determine the rate of respiration Determine the rate of respiration while using yeast to breakdown while using yeast to breakdown different sugars.different sugars.

What is Aerobic Respiration?What is Aerobic Respiration?The breaking down of sugar to produce The breaking down of sugar to produce energy where oxygen is present.energy where oxygen is present.

ATPOHCOOOHC Enzymes 36666 2226126

Glucose + Oxygen Carbon Dioxide + Water+ Energy

When We Exercise…When We Exercise…After two minutes of exercise, the body responds After two minutes of exercise, the body responds by supplying working muscles with oxygen. by supplying working muscles with oxygen.

When oxygen is present, glucose can be When oxygen is present, glucose can be completely broken down into carbon dioxide and completely broken down into carbon dioxide and water water

Anaerobic RespirationAnaerobic Respiration refers to refers to the oxidation of molecules in the the oxidation of molecules in the absence of oxygen to produce absence of oxygen to produce

energy energy

It is also knownIt is also known

As FermentationAs Fermentation

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

What happens when fermentation occurs?

ATPCOOHCHCHOHCATP Enzymes 4222 2236126

Energy + Glucose YeastEthanol + Carbon Dioxide + Energy

Chemical Formula for Anaerobic Respiration

Lab ExperimentLab Experiment

We will be testing four We will be testing four different drinks to see which different drinks to see which will give us the most energywill give us the most energy

So how do we decide which is So how do we decide which is best?best?

Hint: Go back to the formulaHint: Go back to the formula

ATPCOOHCHCHOHCATP Enzymes 4222 2236126

We can measure the carbon dioxide released by each drink in the enzyme

Lab ProcedureLab Procedure

CO2 Gas Sensor to measure total CO2 Gas Sensor to measure total concentration of CO2concentration of CO2 CO2 Gas Sensor

Lab ProcedureLab ProcedureIncubate the yeast solution in a 37 – 40 water bath Incubate the yeast solution in a 37 – 40 water bath Label the five test tubes G, C, F, M, and WLabel the five test tubes G, C, F, M, and WPour 2.5 mL of Gatorade into the test tube labeled Pour 2.5 mL of Gatorade into the test tube labeled G G

Pour 2.5 mL of Coke into the test tube labeled CPour 2.5 mL of Coke into the test tube labeled CPour 2.5 mL of fruit juice into the test tube labeled FPour 2.5 mL of fruit juice into the test tube labeled FPour 2.5 mL of milk into the test tube labeled MPour 2.5 mL of milk into the test tube labeled MPour 2.5 mL of water into the test tube labeled WPour 2.5 mL of water into the test tube labeled W

Lightly stir the yeast suspension to mix the yeast Lightly stir the yeast suspension to mix the yeast that settled to the bottom. that settled to the bottom. Put 2.5 mL of the yeast suspension into all five of Put 2.5 mL of the yeast suspension into all five of the test tubes. the test tubes. Then incubate the test tubes for 10 minutes in the Then incubate the test tubes for 10 minutes in the water bath. water bath. Place the Gas Sensor, and start collecting the data. Place the Gas Sensor, and start collecting the data. for 4 minutes.for 4 minutes.