Winter Break Assignment

Over the break, please share the newsletter with your parents/guardians (click here for a digital copy).
Also, please share the article "Sloths, Moths and Algae . ." and answer the questions on the back.

Final Review

Click here for a copy of the review.

Make a copy (under the "file" tab) so that you can type directly into the google doc. This is your study guide, the more of it you complete, the easier the final exam will be (it is a week from today)

Peer review

We are going to complete the peer review form electronically.  Here are the steps

1. log into google drive
2. Click here to open the peer review PDF form
3. Once it is opened, at the top of the page, click open with and select "DocHub" (if this is the first time you have used this program, you will have to "OK" it for google drive)
4. The PDF will open in DocHub and you can now add text and fill out the form.
5. One person from your group needs to share your report with another group (Mrs. Strong will assign groups)
6. Once you have completed the peer review form, save it in DocHub and then in the top right corner, there is a button to send it to google drive.  Do that and then share it with the author as well as with me.
7. Once you receive your peer review back, edit the original report and fill out your portion of the peer review, following the same steps for when you edited another group's report. 
8. When your report is complete submit the report to canvas and share the peer review with me (through google drive)

Finish up everything (it is all due by Friday 12/12/14)

There are three BIG assignments to work on (as well as your notebook and anything else not completed)

• Ecology Vocab Slides
• Cell Vocab Slides
• Cell Type Lab

Cell type argumentation write up

Read and summarize a magazine article for the first 5 minutes

Work on your writing of the cell type lab.  We do not have the slides (they went to another teacher to use), so use your previous data.  Your whiteboards are still in the front of the roomCreate a google doc to write your report, use the argumentation board as well as the information below.

Click here for a peer review rubric to help you in the construction of your report.

If you finish your report, then click here for a tutorial on osmosis, answer the questions and e-mail the results to me as well as to yourself.

Finish up Egg lab and discuss cell transport

Summaries go on pg 76

Calculate the percent change in the mass of the egg and volume of the liquid.  
Once that is calculated, create a graph for each set of data (mass and volume)

In what direction did the liquid move each day?  How do you know?  Can you explain what happened?





Background Information: Osmosis is the diffusion of water across a selectively permeable membrane. This means that water can go through membranes from areas where there are a lot of water molecules to areas where there are not so many water molecules.To perform their functions, cells must keep an internal steady state even when the environment outside of the cell is changing. This steady state is called homeostasis. Homeostasis maintained in part by controlling the movement of materials into and out of the cell. To achieve this control, cells are surrounded by a membrane that can tell different substances apart, and can slow down or stop the movement of some substances while allowing others to pass through freely. Because not all substances can go through the cell membrane equally well, the membrane is said to be differentially, or selectively permeable. 
Selectively permeable membranes are those that have openings called pores that let water, oxygen, carbon dioxide and certain other small molecules go through the membrane. 
Cells in the human body need a constant supply of oxygen and water. They are also making carbon dioxide as a waste, and this needs to be removed from the cell. These substances can move into and out of a selectively permeable membrane around a cell through the process of osmosis.

Conclusion questions (use the answers to these questions to help you create a paragraph)
Use these questions to help you write a conclusion paragraph

• When the egg was placed in the water, which direction did the water molecules move? Explain your answer.
• Explain the volume of liquid remaining when the egg was removed from the syrup.
• Why do grocery stores spray their fresh produce with water?
• If a shipwrecked crew drank salt water, they could die. Explain why.
• If a bowl of fresh strawberries is sprinkled with sugar, a few minutes later they will be covered with juice. Explain why this happens.