1. AP Biology Discussion Notes Thursday 10/16

2. Goals for the Day 1.Be able to do lab calculations and analysis ……….hmm……..maybe the kind of thing you could demonstrate that you knew how to do……like on a quiz or something……hmmm 2.Describe how things are transported in/out of the cell 3.Be prepared for our QUIZ TOMORROW!!

3. Question of the Day A dialysis bag has an initial mass of 45g and a final mass of 25g. What is the percent change in mass of this bag? Show your calculations.

4. Negative Percent Change? It can happen! If your bag/potato/sweet potato lost mass you should record a NEGATIVE percent change!

5. Question of the Day A dialysis bag has an initial mass of 45g and a final mass of 25g. What is the percent change in mass of this bag? Show your calculations. Is this a hypertonic, hypotonic, or isotonic solution?

6. Lab Analysis Graphs –Dependent vs independent –BEST FIT LINES!!!! Quantitative vs. Qualitative

7. Lab Analysis Class average data If you finish with both pieces of the lab, then talk about possible sources of error in the lab. Why would 1 group have gotten a.34% change and another gotten a 6.5% change?

8. Quiz Tomorrow Lab Questions & CALCULATIONS Water Potential Questions & CALCULATIONS!! Know how to calculate (and graph) –% change