1. HW # 54- Work on your study guide Due Day Three (1/17)-Thursday Warm up -If a membrane is selectively permeable, what does that mean? Cell Analogy Essay Revisions- center of the table Week 17, Day One

2. Warm up Response -A selectively permeable membrane means that some substances can pass through the membrane while others cannot.

3. Homework Response/Check If you would like me to score your revised Cell Analogy Essay, please put a copy of your old essay (and any other drafts that you have) AND the grading rubric in the stack on my desk. This way, I will know that you want me to check your GoogleDoc file.

4. Concentrations Begin Potato Lab Size Line (like a time line, but with size instead)

5. Concentrations -Ratio, compares two numbers EX: 5g of sugar in 1L of water 5g:1L or 5g/L 7g of sugar dissolved in 1L of water 7g:1L or 7g/L What about 60g of sugar in 3L of water? 60g:3L = 20g:1L or 60g/3L = 20g/L

6. http://learn.genetics.utah.edu/content/begin/cells/scale/ Begin the Potato Lab If you complete your set up, work on your study guide

7. In class, we have been studying __________________. **Write 1 to 2 sentences and summarize how that information relates to the lab we have just conducted. During this lab, I was trying to determine if ________. I thought this because _______________________. My data supported/did not support my hypothesis. If you produced data that supported your hypothesis, explain why. If the data produced does not support your hypothesis why might that have happened? Write a sentence or two about that here. I will use the information I learned from this experiment... I would like to learn more about this subject because ____. I still have a question about the topic we are studying. I am wondering ____.