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Biochemistry—Physiology, continued
Aerobic Respiration and Fermentation
Made Easy—Student Laboratory Kit
By: The Flinn Staff
If all living organisms require energy to live and food is broken down to provide that energy, then what by-products are created in the process? Breathe new life into your discussions of aerobic and anaerobic respira- tion (fermentation) with this quick and easy experiment. Students grow yeast cells in fermentation tubes and observe the formation of metabolic by-products. Glucose test strips are used to measure the concentration of glucose (the food source) as it is consumed and an indicator is added to detect changes in the oxygen concentration inside the tube. Graphing the data allows students to compare the rate of glucose consumption to the rate of carbon dioxide formation as the yeast culture grows. Use the included lab extensions to convert this experiment into a great inquiry- based activity for the entire class.
Complete for 30 students working in groups of three.
Anatomy and Physiology
See pages 4–36.
Alcohol Fermentation—
Demonstration Kit
By: The Flinn Staff
The unique color changes will help your students understand the fermentation process. A glucose solution is inoculated with yeast in an Erlenmeyer flask and then connected with a tube to a gas-collecting chamber. As fermentation occurs, the depletion of the oxygen in the flask causes a dramatic color change in the indicator in the flask. Simultaneously, the carbon dioxide produced from the reaction causes a color change in a different indicator solution in the collecting chamber. Enough indicator solutions, yeast, and sugar are provided to conduct the demonstration seven times. Detailed instructions and background infor- mation are provided.
Concepts: Fermentation, pH indicators.
Time Required: One class period
Materials Provided: Glucose, phenol red solution, resazurin solution, yeast.
Note: A 250-mL flask, one-hole stopper, test tube, glass tube, and plastic tubing are required for completion of the demonstration.
Biochemistry—Consumer Science
Effect of Drugs Kit
The use and abuse of drugs are subjects of immense social importance. Young people are asked to form opinions and make real-life decisions about drugs every day. Many times these decisions are not scientifically based. This kit will provide the students with an understanding of what a drug is and how it affects a living organism. Experimenting with a living organism, instead of just reading a written description, allows students to see first-hand the profound effects that simple over-the- counter drugs can have on the test organism, Daphnia.
The kit requires the use of a microscope and living Daphnia (ordered separately). The materials provided are sufficient for 30 students working in pairs. All drugs are safe, over­the­counter drugs in dilute solutions.
BIOCHEMISTRY—CONSUMER SCIENCE continued on next page.
Aerobic Respiration and Fermentation Made Easy— Student Laboratory Kit
FB1750
Catalog No.
Description
Price/Each
FB1750
Aerobic Respiration and Fermentation Made Easy— Student Laboratory Kit
$57.25
Alcohol Fermentation— Demonstration Kit FB1626
Catalog No.
Description
Price/Each
FB1626
Alcohol Fermentation—Demonstration Kit
$27.00
Catalog No.
Description
Price/Each
FB1259
Effect of Drugs Kit
$106.85
LM1110
Daphnia magna, Class 100
37.40
Effect of Drugs Kit FB1259