Biology+12SL

12th Grade SL Biology

**Apr. 30th**:I will begin posting section summaries from the book to help you review here:

**Apr. 27th**: Finally, the third part of option A

**Apr. 24th**: Valentina asked me to post the PowerPoint summary of the Meselson-Stahl experiment on DNA. To summarize: This is the experiment that was used to prove that DNA is replicated semi-conservatively.

**Apr. 24th**: Another summary, this time of section A.2 on the Human Brain

**Apr. 11th**: I have quickly summarized section 6.5 on Neurons and Synapses. The PowerPoint presentation is attached below.

**Apr. 10th**: To make figures out of our mesocosm observations, follow these 10 simple rules.

**Apr. 9th**: Action potential animated

**Feb. 5th**: Practice questions on evolution (sections 5.3 and 5.4)

**Feb. 1st**: Check your understanding of ecology and evolution so far:

https://goo.gl/forms/z5kwlW6qBEmzHek82

**Jan. 19th**: We will do our collaborative research for the mesocosm project here:

https://docs.google.com/document/d/1WdoW7X9dte7hnS2rCYJ_y72nP-_L_XE3KoZDoFbhaXo/edit?usp=sharing

**Jan. 16th**: Some chapter 4 (ecology) practice questions for you.

**Nov. 28th**: Any information from the first three chapters can be on the cumulative exam. Here is a summary of those topics:

**Nov. 24th**: You should probably use Excel for statistics, but to do them manually, here are the critical value tables: Chi-squared: https://www.medcalc.org/manual/chi-square-table.php T-test : [|www.statisticshowto.com/tables/t-distribution-table/]

**Oct. 26th**: When writing your Internal Assessment, remember that this is worth 20% of your overall grade for the course. I recommend taking your time to take the following steps: 1. Complete a draft of your own work following the guidelines I posted on October 2nd. 2. Compare your draft to the exemplars given by the IB Organization. The one linked [|here] received a 21/24. https://ibpublishing.ibo.org/server2/rest/app/tsm.xql?doc=d_4_biolo_tsm_1408_2_e&part=8&chapter=2 What you should be looking at is the examiner comments and the annotated document. 3. Using what you saw in the examples, update your report. 4. Do some peer revision with a classmate! Be honest with each other so that we are all successful. 5. Put the finishing touches on your report and print or e-mail your report to be given to me.

**Oct. 23rd**: Some experiment ideas for your internal assessment.

**Oct. 2nd**: Here is the guide to lab report writing that we saw in class today. Here is the original document detailing how to write a proposal for your experiment:  **Feb. 5th**: Prac