Kenny's IB Biology HL 3-4: September 2016

Saturday, September 17, 2016

Ok, so I know we have already finished one of these weeks, but I'm going to put down what we did anyway:

Tues 9/13: Complete Statistics Packet and get it checked off. Check off the Brine Shrimp worksheet with TI-84 activity on the back. Start Cell Worksheet. Discuss Extra Credit opportunities.
Thur 9/15: Statistics Quiz. Work on Cell Worksheet, due next Monday 9/19. Prokaryote versus Eukaryote Cells. Cell parts. Read 1.1 and 1.2 in your text book for homework.
Mon 9/19: Difference between plant and animal cells. Check off Cell Worksheet and go over. Introduce Cell Model Project. Start plasma membranes. Read 1.3.
Wed 9/21: Early Dismissal Day. A little on history of membrane models. Data-based question on pp. 28-30 done in your notebook. If time, functions of membrane proteins and cholesterol. Draw a diagram of the fluid mosaic model of the plasma membrane. Read "how to use a microscope" section of 1.1 (pp. 3-5) if not already. Tell me your plan for your Cell Model Project.
Fri 9/23: Finish data-based question and membrane structure and get checked off. Parts of a light microscope and how to use one. Start microscope lab using cork slides, pond water, and onion skin. Check in about cell model project due next Thursday 9/29.

Be Able to:

Count sig. figs. and compute and round appropriately
Use TI-84 to calculate standard deviation, t-test, mean, and n (number of stats)
Figure out degrees of freedom, find critical value (using chart), and interpret meaning
State meaning of standard deviation and ranges for 1 and 2 standard deviations
Calculate uncertainty (high-low)/2
Propagate uncertainty for adding/subtracting and multiplying/dividing
Calculate number of organisms in a grid using values from several quadrats

Wed 9/7: Turn in Signed Safety and Academic Honesty Contracts if not already. Go over propagating uncertainty through calculations and do numbers 21-25 on the worksheet. Go over meaning of standard deviation and how to calculate it. Characteristics of a good graph and how to make a good graph using LoggerPro. Make a LoggerPro graph and get it initialed on your worksheet. Pick up Statistics Packet and get through page 1. Get Significant Figures and Uncertainty worksheet checked off. Brine Shrimp Lab due Friday through turnitin.com.
Fri 9/9: Turn in Brine Shrimp Lab sometime today through turnitincom. Make a histogram from the vole data. Finish the statistics packet in class and turn it in. Review what will be on the Statistics and Significant Figures quiz to be taken next Thursday 9/15 in class.

2% 3%
7.2 12.5
7.8 27.8
3.8 19.8
30.5 17.9

22 12
21 42.5
18 18
24 31

13 9.7
32 20
12 24
8,2
54

Please Use the Following Guidelines to Write Up Your Brine Shrimp Lab.

Question: Is there a significant difference in hatching rate between brine shrimp hatched with 2% salt water and 3% salt water?

Using the class data, do a t-test between 2% and 3% salt water. Use the equation and show your work!
Determine the number of degrees of freedom and look up the critical value.
Compare the t-value to the critical value and interpret the meaning.
Discuss the quality of the data. Is it consistent? Is there enough of it?
Discuss at least 3 sources of uncertainty in the lab, being as specific as possible. Include in your discussion whether you think these are major sources of uncertainty or fairly minor.
Suggest at least 3 specific ways to improve the quality of the data. In this case, each source of uncertainty should have a suggestion for improvement.

Submit through turnitin.com by Friday 9/9 at 3:20 pm.

Class ID: 13420275

Password: brineshrimp