Animal Science Bundle 2

Metabolism Experiment (#55): An excellent and very interesting introduction to the metabolic process! This activity introduces students to the study of metabolism by measuring the rate of oxygen consumption of small organisms, such as insects, snails, worms, and germinating seeds. Using two unique Lab-Aids® Metabolism chambers (U.S. Pat. No. 3,581,737), students observe the organisms (not included) and draw correlations between size of an organism, the temperature of the environment and oxygen consumption. They then calculate an organism’s respiratory rate in cubic cm of oxygen per kg per hour, measure total gas change in a closed environment, and determine an organism’s metabolic relationship to total gas in a closed environment. Students also receive valuable practice in recording and retaining experimental data.

Enzymes as Catalysts for Starch Digestion (#25R): This kit allows students to qualitatively and quantitatively observe the catalytic effects of enzymes on the breakdown of starch into sugar. In Part 1, students use Starch Indicator (Lugol’s) Solution to provide evidence that enzymes play a critical role in the breakdown of starch. Part 2, a teacher demonstration, shows that the breakdown of starch results in the production of glucose. In Part 3, student experiments provide evidence that the enzymes are catalysts for the process, not reactants. Optional extensions allow students to examine the effects of temperature and pH on the enzyme activity.

Osmosis and Diffusion (#22): This kit stimulates students' curiosity, model an important characteristic of cells, provide a hands-on experience, and develop good laboratory technique. In this activity, students test for the presence of starch and glucose and then use these tests to observe that some molecules can pass through a membrane while others can not. In conclusion, they are asked to propose a reason for why some substances diffuse through the membrane while others do not.

Enjoy savings off of list price with this bundle.