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Q1 – Week 3 – 9/14 – 9/18

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Refresh this page every time you arrive!                                                                                                                                                                                                                              This page changes and sometimes many times in the same day.  Its a fluid site. I post what I think we will do and then repost what we accomplish.  Homework posted is to be done at home and not completed days ahead of time.  What is posted ahead is subject to change and may not be updated. There is a sequence that needs to be followed. 

 
Everyone needs to join Remind for class.  Click me to sign up.     
 
 Please Make sure Your read all instructions for all assignments.     
 Pill bugs Choice Chamber lab should be done as a Chi-squared activity this week.
                              

______________________________________________________________________________                            Jump to: Monday Homework / top      9/14 – Monday  – A Day – 4/5A ,7/8A  

Main focus–  
a) Research Ant Article analysis. (Be able to identify the IV DV and hypothesis of an authentic article.)  
b) Begin Lab 3 with Fast Plant data collection for Height, and phenotypes.

c) Complete the graph for Lab 2 with final data.

 
 
Period  4/5(a), 7/8(a):
 

1.  Complete Review of FRQ homework last Friday

Chromosome FRQ Complete Key 25-26.pdf                                                                                                  View Download

 
2.  Review of the Experimental Analysis Form (question 6, 2025)
 
 
 
LAB – Fast Plants/Marble notebooks –    DAY 6:

Lab 1 – Check Phenotypes

Lab 2 – graphs of class data

Lab 3 – Health of FAST Plant 

– Write Question

– Hypothesis

– Collect Height Height Data – Total number –> no grid

                                                                                                                                                                         
                                                                                                                                                                                 

Lab 2 Data: 

Lab 2 – DATA – period 4

        30 cm group       Day 1         Day 2        

                       mean: ________      : ________

                            Sd: ________       : ________

                 Group A –  47                      81

                 Group B –  63                      75

                  Group C – 38                      53

                  Group D – 13                      88

                  Group E –  22                     66

36 cm group      Day 1              Day 2      

                        mean: ________      : ________

                            Sd: ________        : ________

             Group TCa –  50                     75

             Group TCb –  45                     96

              Group F/Z –  47                     81

 

Lab 2 data –  period 7

32 cm group      Day 1              Day 2      

                        mean: ________      : ________

                            Sd: ________        : ________

                 Group A –    67                   100

                 Group B –    93                   100

                 Group C –    65                     93

                 Group D –    53                     75

42 cm group   

                                     Day 1              Day 2      

                        mean: ________      : ________

                            Sd: ________        : ________

                 Group E –     38                  100  

                 Group F –     75                   100

                 Group G –     52                    82

                 Group H –      25                   71

                  Group G –       –                     75

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9/14 – Monday’s Homework: – 
 

*You do not need to anything with your graph tonight.

1.  Answer questions to the Ant Research Article –  I am giving you a research article to read and interpret.  Please try your best to answer the first 6 questions. The skill of interpreting biology research is the skill that I want to develop for you and one that you need for this course.  Think what the dependent and independent variable are!

Whole article due Wednesday  9/16 at 4:30 am  – The Ant Odometer Article: (quiz x3)
Tonight – Questions 1 – 6 are due Tomorrow but the whole set of questions are due Wednesday
 
ant odometer full article – student.pdf
View Download
 
a) I will share a google doc with questions that I want you to answer with your personal email that we used this summer. 
 
Make sure that you are logged into google with your personal email NOT the school gmail!

2. Please complete the Experimental Design Form 2 Below. You have 3 submissions tonight.

    The form will be auto-reply after school and not during the day. 

                                                                                                                                                      

 

From our AP Biology Reference Tables:

                     

                                                                    

 
2) Experimental Design Form 2 – 

 

_________________________________________________________________                                                 Jump to: Tuesday Homework / top
9/15 – Tuesday  – B Day – 4 , 7   

Main focus–  

a) Research Ant Article analysis. (Be able to identify the IV DV and hypothesis of an authentic article.)
b) Continue with Fast Plant data collection for Height, and phenotypes.
c) To identify a positive and negative control in experimental designs.

 
Period  4 , 7:
 
1.  Started with a discussion about controls in experiments using the graph from the weekends experimental form using the ald gene. The WT/WT test group was positive control.
 
Controls: Used for a) Comparisons of IV test groups
                                    b) Eliminate other variables that can weaken the experiment 
 
pill vs. Being Happy (anti depressant medication)
Control / placebo effect / double blind
placebo effect on elixers sold (scams – curols) –> Prescription to hypercondriacts
 
2. Review the basics of the Ant Article – 
 
ant odometer full article – student.pdf
View Download
 
  a) with NPR Video of the ANT research media.
  b) Whisker box plots data explained
 
LAB – 
 
2: Fast Plants/Marble notebooks –    
-DAY 7:

a) Phenotype check for Lab 1

b) Day 7 – Height data collected/ count the control

c) Control for % germination.

                                                                                                                                                                         
                                                                                                                                                                                 

 NPR Video of that will help in the investigation of Ants:  .

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9/15 – Tuesday’s Homework: – 
 
1. Review Whisker box statistics/if needed – Complete the Ant Article Questions.
– The Ant Odometer Article:
j
The following is a short video on whisker box statistics that they use for their error bars. You will need this to understand the data.  The error bars they use on the boxes are not Standard error.  I did go over theses box plots in both classes but if you need to review the video is waiting.
 

Remember the box plots are just middle 50’s which just mean 50 percent of the middle of the Normal Distribution of values with the Median in the middle.  They call these box plots IQR’s  (Inter Quartile Range’s) .  The whiskers do not include the outliers BUT show how the data skews toward one direction AND WE DO NOT use the outliers (or whiskers)  to see if they overlap!!!  I am an outlier (+2 or more SD from the mean in height) and you would not judge or make any statistical  judgements on my height FOR the entire population. Example:  How does the airline industry determine the size of seats and the distance between them? Would they use the my height to make these determinations?  We care about the population around the norm (mean or median) and we care about the majority of the ants are doing and not the outliers.  So we look to see if the boxes overlap or not for a determination of significance.

 Box Plots and Wiskers Statistics explained for the ANT research Article.  .

_____________________________________________________________________________                   Jump to: Wednesday Homework / top   9/16 – Wednesday  – A Day – 4/5A ,7/8A 

Main focus –    
 

a) To complete the Graph of Lab 2 in Excel.
b) To practice analyzing the data from lab 2 and begin the conclusion.     

c) Use Excel to setup spreadsheets to calculate mean, sd, SEM And graph for the Lab 3.                                

We are measuring the heights of our Fast plants grown in different brightness to see if there is a statistical difference using the Standard Error of the mean.

 
Period  4/5(a), 7/8(a):

 

1. Continue and complete the graph for Lab 2 in Excel.

We will continue to graph the mean percent germination of Fast Plants for DAY 1 & DAY 2 We will Make Bar graphs and add Errors Bars that include +/- Standard Error of the Mean.
The Excel activity is doing the following skills for you:
a) Make an appropriate scale for the dependent variable.
b) correctly plot your bars (4)
c) label your y axis and label you bars appropriately
d) Give your graph a title
e) Add error bars and plot them appropriately.
f) Your graph needs to accurate and use most of the graph paper to best demonstrate the differences or similaries between the test groups. 

2. Begin to analyze our data and write a conclusion.

 
3.  LAB – Marble notebooks –    -DAY 8:

a) Phenotype check for Lab 1

b) Day 7 – Height data collected/ count the control

c) Control for % germination.

                                                                                                                                                                                                                                                     
                                                                                                                                                                    

__________________________________________________________________                                                                                      Jump to:   top       9/16 – Wednesday’s Homework: – 

 

1. Please Watch the lecture below with the worksheet that I handed out in class. You could also flip through the Google Slides on the presentation below based on Chi – squared.

                                                                                                                                                                                                                              2.   You will be completing the backside with me but the key is posted below if you are running into trouble on          the first side. For those that like the written words, please see my Chi-squared notes that explain the           

        concept.
 
Biology statistics 4a – Mendelian Chi squared analysis.pdf
View Download
 
Biology statistics 4a – Mendelian Chi squared analysis key p .pdf
View Download

         

3.   Complete the Chi – squared Intro form below:

 – You have 4 submissions to this form.

                                                                                                                                                                       

From our AP Biology Reference Tables:

      Which statistic is next???                                                                                                                                                                                                                                        

 

Statistics Presentation: Slide 51 and on reviews Chi – Squared Statistics

Lecture for weekend homework:  for the Chi – Squared statistics.  .

 

 
1) Chi – Squared Intro Form- 

 

__________________________________________________________________                                                   Jump to: Thursday Homework / top   9/17 – Thursday  – B Day – 4 , 7                                                                                       

 

Main focus–
                                                                             

a) To review the concepts of Chi- Squared

 

Period  4,7:

1.  Chi-squared lesson/hw review

Biology statistics 4a – Mendelian Chi squared analysis key p .pdf
View Download                                                                                                                                                       

Chi – Squared Intro Form key p .pdf
View Download 

Statistics Presentation: Chi-squared (slides 51 – 58)

From your Reference Tables: Chi-squared 

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9/17 – Thursday’s Homework: – 
 

1.  Complete the Chi squared Practice Problem.pdf worksheet below (handed out in class) and review                with the key. If you need help please view the lecture below that will explain step by step how to complete the worksheet.

 
Chi – Squared Practice Problem.pdf
View Download
 
Chi – Squared Practice Problem key p .pdf
View Download
 

                                                                                                                                                                                                  

 

Lecture for tonights Chi – sqared genetics problem:  

 

 _____________________________________________________________________                                            Jump to: Friday Homework / top      9/18 – Friday – A Day – 4/5A ,7/8A

Main focus–       
                                                                                                                                       
a) To review the concept of Chi – Squared and provide and authentic demo to see if 
          there are “cheaters ” in the class based on this statistic
     
b) To Build our class graph for Lab 3 using class data and excel

 

Period  3,4(a), 8/9:   

1. Hand Back Graded Ant article – 😳.

    a) Best out of 2 for the next article!
    b) handed out the next article

ANT article Rubric and Key.pdf
View Download 

ANT article Student Written Key.pdf
View Download 

2. Review the concept of Chi-squared/use presentation of different Critical Value tables

a) review of the homework- 

Chi – Squared Practice Problem key p .pdf
View Download 

                                                                                                                                                                                  3. Use Chi – squared to find “cheaters”                                                                                                
 
Using the first submission from the Meiosis and Mitosis Form from last Thursday, we statistically determined whether the class was cheating on the form using Chi- Squared analysis. Basically we were investigating whether the early submitter were helping the later submitters in the form. We compared the number of individuals from the early time that scored above the mean and compared it to the number of individuals that scored above the mean in the later submission time period.  The idea here is that possibly the early submitters, who get their answers back, are helping the later submitters.  
 
We ran a null against the idea that there was no cheating going on and thus the expected outcomes should approximate the observed number.
 
expected outcome = equal number of individuals from the EARLY group and the LATER group will have EQUAL number of individuals that score above the mean iF there is no cheating
 
Null Hypothesis:  Students in the Late group do not have an advantage over the early submitters in the form.
 
We used the following the do the chi- squared analysis:                                                                                                                             
Today’s Classwork: 
AP Bio Cheating Analysis – 25/26 Chi squared analysis.pdf
View Download

                                                                                                                                                                                      

3.  LAB – Marble notebooks –    -DAY 8:

a) Measure heights on final day (10) – Lab 3

b) Complete graph for Lab 2 – Conclusion practice.

c) Write the Title, Hypothesis, for lab 3.

 

Notes for the Lab will come from the following presentation:

Statistics Presentation: Chi-squared (slides 51 – 58)

__________________________________________________________                                                                                        Jump to:   top

9/18 – Friday’s Homework: – 
 

1.  Complete the Chi- Squared form below.

2.  Complete the Conclusion in lab 2 – % Germination of fast plants and Brightness of light, in your lab notebook.

Requirements:

1. Title
2. Question
3. Hypothesis
4. Prodedure
5. Data section:  

     a) Data Table
     b) Graph

6. Conclusion – 

       a) First paragraph – How much support did the data provide towards your hypothesis? What does your data suggest in terms of significance or general trends? 

     b) Second paragraph – What’s your Leap?  What is the data suggesting about the biology of the fast plant seeds.  Make a leap from the data to what it means in terms of organisms alleles and genetics. This paragraph is conjecture but it needs to be logical.

      c) Third paragraph – What errors may have muddied the water or your outcomes? What part of the expirimental design may have affected your outcome.  Describe the experiment would you follow up with given the outcomes in this current experiment.

DO NOT BE VAGUE!!!!

3.DUE Wednesday 9/21. Complete the questions from the New Research article on the Drosophila Fly. The questions have been sent out to you as an link like the last article.

Drosophila Research Article.pdf
View Download 

 
1) Chi – squared Form 2 –  You have 3 submissions on this form BUT It will not send any emails back during the school day.