Explain why catalysis activity decreased over time. Conclusion The purpose of this lab was to learn about the optimal foraging theory by measuring tree selection in beavers. Data questions are a series of questions about a single data set graphs, charts, experiment summary. Use H2O syringe and put 10 ml of H2O in 60 ml cup labeled baseline. Methods and Materials: This section of your lab report involves producing a written description of the materials used and the methods involved in performing your experiment. Wise, Mississippi State University, Mississippi State, Mississippi. Chemical energy being stored as glycogen C.
This finding agrees with our hypothesis that beavers are likely to show a preference for certain tree species. Discussion and Conclusion: This section is where you summarize what happened in your experiment. Lab 1 Diffusion, Osmosis, and Water Potential of Glucose Problem: What effects will glucose have on diffusion, osmosis, and water potential? In addition to these environmental factors, other molecules may react with an enzyme. We swirled the contents to mix them together. In this case, a large molecule like starch, is dissolved in water.
For this final activity, we did five time trials for to find out the decomposing rate of H2O when catalane is added. Design a controlled experiment to test the effect of varying pH, temperature, or enzyme concentration. How could you show that the gas evolved is 02 Capture bubbles in closed solution and ignite. Swirl the unconcealed decomposition cup to mix the contents. So, in drosophila we recover each meiotic product separately as a fly.
The College Board neither endorses, controls the content of, nor reviews the external Web sites included here. Add 1 ml of catalane to the unlabeled cup. The Quarterly Review of Biology. The exam features 63 multiple choice questions, 6 grid-in math questions, 2 long free-response essay questions, and 6 short free-response questions. The reason is because when the titration was taking place, different people were doing it which would affect the credibility and precision of the titration. Species Average Cecum Length Diet A 40. Introduction In this lab, we explore the theory of optimal foraging and the theory of central place foraging using beavers as the model animal.
If liver had been boiled there would be no bubbles. I have no information on enzymes or other biochemical mechanisms. Thus, more water flows into the side with the starch than flows out, and the starch gets diluted. Sorry, but copying text is forbidden on this website! Two cellular organelles are represented by the letters A and B. The professor's last name is Lux. Investigation 10: Energy Dynamics What factors govern energy capture, allocation, storage, and transfer between producers and consumers in a terrestrial ecosystem? The lack of any observed difference in mean circumference between chewed and not chewed trees does not agree with our hypothesis that beavers will prefer smaller trees to larger ones. Pearson Scott Foresman, donated to the Wikimedia Foundation.
There seems to be a fine line between energy intake and energy expenditure in beavers that is not so easily predicted by any given theory. Host-plant selection, diet diversity, and optimal foraging in a tropical leaf-cutting ant. T he following diagram shows energy transformations within a cell. Chemical energy released by glycolysis C The reaction occurring in organelle B is cellular respiration, as indicated by the release of energy stored in the bonds of glucose. We also made mixtures and titrated them to see the amount of H2O in a solution after titration.
You can find the link to BioG 101-104, Cornell University, under See also. The bubbles got smaller, and they moved into the center. Because the question specifies that oxygen is required, the process depicted must show aerobic respiration rather than glycolysis. There was a reaction tort tell deterrent time trials — one tort 10 seconds, 3 seconds, 60 seconds, 120 sec, and 180 seconds. When titration is done, 5 ml of acid will go in a beaker. We wanted to know if beavers put the optimal foraging theory into action when selecting food.
Hank Green Speaking at VidCon 2012 at the Anaheim Convention Center in Anaheim, California. Although beaver selection of certain species of trees may be related to the nutritional value, additional information is needed to determine why beavers select some tree species over others. Line up the 60 ml cups with the labels 10 sec; 30 sec, 60 sec, 120 sec, and 180 sec. Discussion Although beavers are described as generalized herbivores, the finding in this study related to species selection suggests that beavers are selective in their food choice. Feel free to contact us, this site is, after all, written for you.