Preview

Enzymes

Powerful Essays
Open Document
Open Document
2259 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Enzymes
Name __________________________________
AP Biology

Period _________
Date ______________________

AP: LAB-RELATED AP EXAM ESSAYS
LAB 1. OSMOSIS AND DIFFUSION
ESSAY 1992
A laboratory assistant prepared solutions of 0.8 M, 0.6 M, 0.4 M, and 0.2 M sucrose, but forgot to label them. After realizing the error, the assistant randomly labeled the flasks containing these four unknown solutions as flask A, flask B, flask C, and flask D.
Design an experiment, based on the principles of diffusion and osmosis, that the assistant could use to determine which of the flasks contains each of the four unknown solutions.
Include in your answer:
a. a description of how you would set up and perform the experiment;
b. the results you would expect from your experiment; and
c. an explanation of those results based on the principles involved.
Be sure to clearly state the principles addressed in your discussion.

1 of 16
2004-2005

Name __________________________________

AP Biology

LAB 2. ENZYME CATALYSIS
ESSAY 2000
The effects of pH and temperature were studied for an enzyme-catalyzed reaction.
The following results were obtained.

a. How do (1) temperature and (2) pH affect the activity of this enzyme? In your answer, include a discussion of the relationship between the structure and the function of this enzyme, as well as a discussion of how structure and function of enzymes are affected by temperature and pH.
b. Describe a controlled experiment that could have produced the data shown for either temperature or pH. Be sure to state the hypothesis that was tested here.

2 of 16
2004-2005

Name __________________________________

AP Biology

LAB 3. MITOSIS & MEIOSIS
ESSAY 1987
Discuss the process of cell division in animals. Include a description of mitosis and cytokinesis, and of the other phases of the cell cycle. Do not include meiosis.

ESSAY 2004
Meiosis reduces chromosome number and rearranges genetic information.
a. Explain

You May Also Find These Documents Helpful

  • Good Essays

    Enzymes

    • 333 Words
    • 2 Pages

    * Enzymes bind to substrates = this helps to “ensure” correct angle/orientation higher percentage of collisions will result in a reaction.…

    • 333 Words
    • 2 Pages
    Good Essays
  • Good Essays

    Enzyme

    • 585 Words
    • 3 Pages

    For Activity A, we first tested enzyme activity. First, we used an H2O2 syringe to transfer 10 mL of H2O2 into an unlabeled 60-mL cup. Then, we used a transfer pipet to add one mL of catalase solution into the unlabeled 60-mL cup that we put H2O2 in. After that, we observed the solution for one minute. Then we tested the effect of boiling on enzyme activity. First we used a transfer pipet to transfer 4 mL of catalase into a test tube. After that, we placed the test tube filled with catalase in a boiling water bath for five minutes. While we were waiting, we rinsed the unlabeled cup we used earlier when we tested enzyme activity. Then we used a H2O2 syringe to transfer 10 mL of H2O2 into the rinsed unlabeled cup. After five minutes, we transferred 1 mL of the boiling catalase into the unlabeled cup with H2O2 in it with an unused transfer pipet and observed the results. After testing the effect of boiling on enzyme activity, we tested for catalase in living tissue. First, we rinsed the unlabeled 60 mL cup we used earlier. Then, we used a scalpel to cut a small piece of liver. After that, we macerated the piece of liver with a glass rod. When the liver was macerated enough, we put it in a cup with 10 mL of H2O2, which was transferred into the cup with a H2O2 syringe. Lastly, we observed the cup.…

    • 585 Words
    • 3 Pages
    Good Essays
  • Good Essays

    enzymes

    • 1044 Words
    • 5 Pages

    4. Describe what is measured as an indicator of sucrase activity and why this is an indicator of sucrase activity.…

    • 1044 Words
    • 5 Pages
    Good Essays
  • Satisfactory Essays

    Unit 1 Questions

    • 727 Words
    • 6 Pages

    10. Examine the following data for three enzymes (A, B, and C). Each has been tested at a number of temperatures and pH levels to measure their activities. Based on these results, for each enzyme (A, B, and C)…

    • 727 Words
    • 6 Pages
    Satisfactory Essays
  • Good Essays

    Another commonly used term for “mitosis” is “cell division”, because the division of cells is what occurs during the process of mitosis.…

    • 886 Words
    • 4 Pages
    Good Essays
  • Powerful Essays

    How Heat Affects Lipase

    • 1180 Words
    • 5 Pages

    Bibliography: Worthington Biochemical Corporation ha put together many different papers on the effects of enzyme action into one paper. It was originally published in 1972 but was last updated in 2013. This article gives a lot of information on the effects of enzyme action that has been seen on many other articles, it shows to be reliable because of the many authors that have been credited. This is a reliable source because these website holds many other useful experiments and general articles.…

    • 1180 Words
    • 5 Pages
    Powerful Essays
  • Good Essays

    Enzyme and Heavy Metals

    • 502 Words
    • 3 Pages

    (b) TRY TO FIND OUT HOW THIS POISON INTERFERES WITH ENZYME FUNCTION. BRIEFLY DESCRIBE ITS EFFECT ON A NAMED ENZYME.…

    • 502 Words
    • 3 Pages
    Good Essays
  • Satisfactory Essays

    Bio Enzyme

    • 467 Words
    • 2 Pages

    Why are there so many different varieties of cheese when the production process is basically the same for all cheeses?…

    • 467 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    Design an experiment, based on the principles of diffusion and osmosis, that the assistant could use to determine which of the flasks contains each of the four unknown solutions.…

    • 952 Words
    • 4 Pages
    Good Essays
  • Powerful Essays

    It was hypothesized that enzyme concentration, temperature, and inhibitors will affect the properties and abilities of the enzyme.…

    • 1360 Words
    • 6 Pages
    Powerful Essays
  • Good Essays

    Biochemistry Enzymes

    • 1114 Words
    • 5 Pages

    * The damage of liver cells and a decrease level of phosphate groups will lead to hypoglycemia and will damage…

    • 1114 Words
    • 5 Pages
    Good Essays
  • Good Essays

    Cell Reproduction

    • 1155 Words
    • 5 Pages

    Cellular reproduction is the process by which cells duplicate their contents and then divide to yield two cells with similar, if not duplicate contents. Life as we know it depends on the ability of cells to store, retrieve and translate the genetic instructions required to make and maintain a living organism.…

    • 1155 Words
    • 5 Pages
    Good Essays
  • Powerful Essays

    Learning objective 1

    • 2488 Words
    • 10 Pages

    Analyze disruptions in cell cycle regulatory mechanisms, and predict their impact on progression of the cell cycle and relevance to human health.…

    • 2488 Words
    • 10 Pages
    Powerful Essays
  • Good Essays

    Simply put, if meiosis didn’t occur, human and animal reproduction would be impossible. If meiosis didn’t occur the chromosome number would double with each succeeding generation. Also meiosis allows room for the second parent’s chromosomes. If meiosis didn’t reduce the number of chromosomes in the cell by half, there would be no room for additional chromosomes from…

    • 536 Words
    • 3 Pages
    Good Essays
  • Satisfactory Essays

    Enzyme

    • 3018 Words
    • 23 Pages

    Dixie earned her LPN and ADN from Hawkeye Community College. She then went on to complete her MSN at…

    • 3018 Words
    • 23 Pages
    Satisfactory Essays