Today in class:
1. Students turned in the Enzyme FRQ
2. Students completed an activity entitled "carbon atom to coffee bean" where they attempted to arrange 18 items from smallest to largest. This was followed by an interactive animation zooming in from a coffee bean down to a water molecule. The animation can be found at http://learn.genetics.utah.edu/content/begin/cells/scale/
3. We discussed the front of the Chapter 6 worksheet and the roles of various cellular structures.
HOMEWORK
Read 6.6 and 6.7. Take notes in either Cornell or Outline format.
NEXT TEST
Will be on Tuesday. It will cover Biomolecules (Ch. 5), Enzymes (sections 8.4 and 8.5) and Cells (Ch. 6)
Tuesday, October 5, 2010
Monday, October 4, 2010
What Makes a Cell Alive?
Today in class we wrapped up enzymes by going over allosteric regulation, including the roles of activators and inhibitors in enzyme activity. Homework is a free response question on enzymes. See me for this if you were absent.
Students then completed a worksheet titled "Ch. 6 A Tour of the Cell." See me for this if you were absent. The first part of the worksheet listed the roles of different cell parts in making up a functional cell. The second part described the journey of a secretory protein through the endomembrane system. A list of terms from this section that students must know was also provided on the back of the worksheet. If worksheet was not completed in class then it, too, became homework.
Next Wednesday is Super-Wednesday! There will be an optional morning tutorial from 7:30 until 8:45. Students do not need to be at school until testing begins at 9:00.
Students then completed a worksheet titled "Ch. 6 A Tour of the Cell." See me for this if you were absent. The first part of the worksheet listed the roles of different cell parts in making up a functional cell. The second part described the journey of a secretory protein through the endomembrane system. A list of terms from this section that students must know was also provided on the back of the worksheet. If worksheet was not completed in class then it, too, became homework.
Next Wednesday is Super-Wednesday! There will be an optional morning tutorial from 7:30 until 8:45. Students do not need to be at school until testing begins at 9:00.
Friday, October 1, 2010
Catalyzing Like Crazy!
Today we did our competitive lab. The goal was to get catalase to break down hydrogen peroxide at the fastest rate. Each class had a winning team that received AMAZING prizes from the Grab Bag of Science! The winning combination in all classes seemed to be a pH around 9 and a substrate temperature between 42 and 50 degrees Celsius. This was unexpected since our enzyme came from potatoes that have a pH around 6 and a temperature of about 19 C, but that was what our data showed.
Hopefully you spent time in lab thinking about enzyme function and the ideal range of temperature and pH for enzyme activity. I also enjoyed overhearing conversations about potentially denaturing the enzymes and how that would affect its functionality.
On Monday we will analyze what we have learned about enzymes and discuss allosteric regulation in those classes where it did not come up on block day.
There is no assigned homework, but I recommend that you get out and enjoy the nice weather on Saturday. How about checking out the Issaquah Salmon Days?
Hopefully you spent time in lab thinking about enzyme function and the ideal range of temperature and pH for enzyme activity. I also enjoyed overhearing conversations about potentially denaturing the enzymes and how that would affect its functionality.
On Monday we will analyze what we have learned about enzymes and discuss allosteric regulation in those classes where it did not come up on block day.
There is no assigned homework, but I recommend that you get out and enjoy the nice weather on Saturday. How about checking out the Issaquah Salmon Days?
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