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A Cell WebQuest

for the Students of

Ms. Comfort

at Morton Middle School

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Introduction

In this activity you will investigate some of the important purposes of living cells. By understanding how cells operate, you can better understanding how you as a living thing operate and have a better appreciation of your role in the entire biosphere.

Task

In this lesson you will visit the Internet sites below and answer the questions and complete the drawings on your worksheet.

Resources

and the 

Process

Go to Cells Alive and choose Plant Cell from the left side. From this new picture, choose the Cell Membrane and (1.) write a brief description of this structure.

Click on Ion Channels to observe embryonic heart cells beating. To understand how these cells operate, click on Ion Channels on this page and study the video clip. Often we call the cell membrane the "gate keeper." (2.) What are you observing in this video clip that supports this role of the cell membrane.

Go "Back" to the Plant Cell and click on Cell Wall. (3.) Does it sound like the cell wall is a gate keeper? How would you describe its role?

While you're at this site, locate the video clip of "Ouch....Anatomy of a Splinter" and (4.) describe what you observe. (You will have to click on "ooouuuuuch" to see the video.)

Now go to The Cell Membrane and (5.) explain how the membrane is like a school crossing guard and what is meant my the terms "hydrophobic" and "hydrophilic."

Use this same page to locate and (6.) draw the picture that illustrates the "crossing guard" thing.

Use this same page to locate a (7.) draw a picture of the Cell Wall of a plant that has a "normal" amount of water.

Visit Leeuwenhoek. (8.) What did he feel was his duty as a scientist? Why does this man show up in almost all of Life Science books?

Go to Osmosis. Click on the video for the hypertonic solution and (9.) describe what happens to the cell; click on the video for the hypotonic solution and describe what happens to the cell. Describe an "isotonic" solution. Does diffusion occur if a cell is in an isotonic solution?

Now you get to watch a movie. Click on BrainPop Movies. Watch this short video all the way through the first time. Then carefully read the following questions. Now, watch the video again and take (10.) note of the information you need to answer the questions below:

  1. What is Moby doing in the background at the beginning of the movie? What does this have to do with this movie?

  2. What is the cytoplasm?

  3. What is the job of the cell membrane?

  4. In what structures is energy "made"?

  5. Draw and label four of the different types of cells shown in the video.

  6. Approximately, how many cells does your body contain?

  7. What is the purpose of mitosis?

Click on Cells Are Us to see how we all started off as one cell, but now are made of trillions of cells. (11.) Write a brief summary of this process.

 

Worksheet

Click here to download the worksheet for this activity.

Teacher Tips

Click on Back in the upper left corner to return to the webquest to read directions and move to the next site. If you ever get lost, click on the Home button to get back to Mr. Holthaus' web page.

Evaluation

This is a 100 point project. Your grade is based on:

  • how well your group functions

  • how well your paper is completed

  • how much effort you put into your drawings

  • how organized your responses are

Conclusion

There is much to learn about the cell. As you continue through your study of Biology you will be amazed at how organized and complex this very tiny object really is. But for now, it is important that you understand that it is the basic unit of structure of all living things, its membrane is critical for the cell to operate properly, and that most cells are able to make another like themselves through the process of mitosis.

Created by Mr. S. Holthaus