Cells

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Enter your cell parts and descriptions here: http://www.studystack.com/ This is an online flashcard system.

Welcome to the world of cells. You have just finished the unit on classification and are now moving into the unit involving cell processes. Can we use cells to classify organisms? What is the connection between classification and cells? You will be asked to pose questions such as these throughout your cell process activities.


 * Before you begin, be sure to create a new team page. Also, state who is creating the specific pictures or taking motic pictures at the top of your team page. Divide the work equally.**

=Cellvivor=
 * Cellvivor activity** - Each group has to make one desperate attempt to keep their cell part from being voted out of the cell. Make a convincing argument as to why your cell part is important and the cell cannot survive without it. We will be using stop motion photography and the medium your class has chosen to portray the cell part and the actions that it provides. Voting will follow to determine the cell part that will leave the cell (the one with the weakest argument will lose). Be sure you understand the purpose of the cell part and how it accomplishes its action.

Homework: Create a script for the importance (your case) for the cell part. List how you will portray your cell part (what it will look like) and how you will demonstrate the actions that it does.

=Types of Cells Activity= 1. Research the two basic types of cells - prokaryote and eukaryote. a. Use a sketch program to draw a diagram to show the basic construction of each cell type. You can draw on paper and scan into an image/take a picture. b. Place the name of the cell type as a title above your drawing c. Add at least three labels to your diagram d. Underneath the diagram add a caption consisting of at least two sentences describing the cell type. 2. Chose 2 slides from the slide tray that will show actual cells that demonstrate the two basic types of cells.(One of your slides demonstrates one type of cell while the other slide demonstrates the second type). a. Use the moticam to take a photo of each type of cell. If it is difficult to take a clear image of one of your slides (they are very small cells), you are allowed to use a copyright free picture from the Internet (if using Wikipedia, you must link to the article the picture came from.) A new creative commons search is http://www.sprixi.com/ When you download the image, it will already have the person's name on the image. b. Place the name of the cell and its type as a title above your photos c. Place a two or more sentence caption below the photo to describe the cells. Make sure you point out the reasons for why it is one type or the other. 3. Compare and contrast the two basic types of cells. Use a chart, paragraph, or other way to compare and contrast. 4. What question do you still have about what you have learned from the activity? State your question, then do research to answer. List your sources of information(at least two).

=Assessment:=

=**Homework #1**:= Chose one of the questions in the introduction to answer. State the question, then do research to answer. List your sources of information(at least two).

=Homework #2:= What do you know about cells? Create a chart discussing what you know about cells (please do not look anything up for this) and what you would like to know about cells.)

=Annotating cell notes= Use this document: Annotate using the following method: http://mrsmaine.wikispaces.com/Annotating+notes (you are doing this with the cell notes and not biomolecule notes - YET.)

According to cell theory, all living organisms are made of cells. Cells are the basic unit of structure and function of all living things. In this activity you will explore the similarities and differences between plant and animal cells.
 * =Comparing Plants and Animals=

=Onion Cell= 1. Prepare a wet mount slide of a small piece of onion skin. Add 1-2 drops of methylene blue or Lugol's iodine to the slide, then apply a coverslip.

2. Observe the cells and identify at least 3-4 cell structures.

3. Take a photo of the onion cell with the motic cam. Measure an average cell with the motic cam. Add a title, 3 labels, and a descriptive caption.

4. Add concentrated salt solution to the slide and observe changes. Take another photo with the motic cam and label at least 3 parts to show changes. Add a title and a descriptive caption to describe changes. (You only need to add salt solution to the elodea or the onion cell and do not need to do it for both.)

Questions: 1. Describe the shape and arrangement of the onion cells.(2)

2. (If you added the salt solution) What happened to the cells when concentrated salt solution was added to the cells? (1) Why do you think this happened?(1)

3. What was the purpose of adding the methylene blue or Lugol's iodine to the slide?(1)

4. What question do you have about this activity that has not yet been answered?(1) Do research to answer the question or design and perform an experiment to answer the question.(2) Remember to cite your sources.

5. Explain what happens when salt water is added to a cell (either the eloda or the onion.) You must use these words in your explanation: osmosis, diffusion, hypertonic, and hypotonic.

=Elodea Cell= 1. Prepare a wet mount slide of an elodea leaf. Remember to apply a cover slip. Move the slide around until you observe the elodea cells clearly. (Hint: Sometimes along the edge of the leaf the cells are more visible). 2. Observe and identify 2-3 structures. 3. Take a photo of an elodea cell with the motic cam. Measure an average cell with the motic cam. (Remember to measure the length, not the width). Add at least 2 labels to the elodea cell. 4. Add concentrated salt solution to the slide and observe changes. Take another photo with the motic cam and label at least three structures to demonstrate changes that occurred.

Questions: 1. Compare and contrast the onion cell and the elodea cell.(2)

2. (If you added the salt solution) What happened to the cells when concentrated salt solution was added to the cells? (1) Why do you think this happened?(1)

3. What question do you still have about elodea or this lab activity?(1) Do research or design and perform an experiment to answer the question.(2) Cite your sources.

=Cheek Cell Lab= 1. Obtain a flat toothpick and carefully scrape the inside of your cheeks. Add 1-2 drops of water to a slide, then add the cheek cells to the water by swirling the toothpick in the water. Add a drop of Lugol's iodine to the cell suspension. Carefully add a coverslip. 2. Observe the cells to identify 3-4 structures. 3. Take a photo of the cheek cell with the motic cam. Measure an average sized cell with the motic cam. Label at least 3 structures. 4. Finish by adding a title above your photo and a descriptive caption consisting of 1-2 sentences below the photo.

Questions: 1. Describe the shape and arrangement of the cheek cells.(2)

2. Compare and contrast the cheek, onion, and elodea cells.(6)

3. What question do you still have about this activity?(1) Do research to find the answer or design and perform an experiment to answer your question.(2) Cite your research sources.

=Assessment:=

Create a glogster of your findings. Use this resource to answer questions: http://docs.google.com/View?docid=dgqwv5cr_127g7nqc8fm and http://ktitraci.wikispaces.com/Glogster

Does this help?
 * Cell homework #3**: How do the sizes of the onion, elodea and cheek cells compare to one another? Backup your statements with research with other sizes of cells (do not just restate the sizes, but create a comparison.) How do all the activities make a common statement about cells, parts, size...?
 * Need help with this question?** Think about the following and answer: What do you notice that is different or similar between the different cells in lab (the parts that it contains, the sizes of the cells, etc.)? Research any other kind of cells that exist. What sizes are they? How does that compare to the sizes of the cells that are from the lab?

Cell resources:
 * Cell homework #4**: Discuss how size is estimated using a microscope manually in your own words. ||

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=Animations activity= http://www.stolaf.edu/people/giannini/biological%20anamations.html

http://learn.genetics.utah.edu/content/labs/extraction/

=Comparing sizes of cells and parts= http://learn.genetics.utah.edu/content/begin/cells/scale/

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Epidemiology Read this article: http://www.sciencedaily.com/releases/2009/12/091203132157.htm?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+sciencedaily+%28ScienceDaily%3A+Latest+Science+News%29&utm_content=Google+Reader

Memory http://www.teach12.com/ttcx/brainlecture.aspx?cm_mmc=affiliate-_-brainlecture-_-openculture-_-text&ai=39041

http://undsci.berkeley.edu/