Chemistry 12:  Today we started with a mini-review of Reaction Mechanisms.  We took notes on Catalysts, and read sections 1.10, 1.11, and 1.12.  Unit 1 # 56-61 is due on Friday, as well as Lab 18C (without a conclusion).  We did a review assignment of all topics from 1.1 to 1.8, and finished with a Quiz on the Hebdon Questions that were assigned on Tuesday.  There will be a Rates of Reaction Test on Tuesday, February 20th.  Expect a practice test on Friday.

Science 10:  Today we learned about how the information in DNA is used to build a protein, which will likely go on to catalyze a chemical reaction.  We took some notes,  watched "From DNA to Protein", and read pg 141 - 146 in the old Nelson Biology 11 text.   We did pg 153 # 1-25 (all MC, answers only).  In the second half, we measured the lengths of about 250 beans and graphed the #beans vs the length, which revealed natural distribution (or bell curve).  This notion of variation among a population was the lead into "Natural Selection", which is the best explanation for all the diversity of life on this planet. Whew!  We learned a lot today!