Thursday, January 12, 2012

Let's finish it!

Today, Friday, is all about finishing what we started:
First, the Eggs-spiriment, all about eggsmosis:  see Monday's post.  finish up and write down in your lab notebook briefly what you discovered and observed.  Answer any questions that were asked.  Perhaps take a photo to document your work.

Second, do the math and graphing for the experiment we did yesterday with the dialysis tubing. (the second one with the 4 bags.)  Read the questions and answer what you can. [btw, I figured out what I did wrong in the first experiment-- I used sucrose instead of glucose.  The test strip was for glucose.  Also, sucrose is a larger molecule than glucose, so it could not diffuse through the membrane. Live and learn.  :p]

Third, read the last section, chapter 7.4 , I think you can skip the study guide questions this time, but do look at the pictures and be observant.
Review the flash cards you made for the organelles, or find a quizlet
  http://quizlet.com/57013/cell-organelles-flash-cards/
Use coloring pages to review and ID the organelles.

2 comments:

  1. My eggs' shells didn't go away, they just softened and expanded with the insides. Or perhaps they dissolved and what's left is just the outer skin. What happened?

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  2. I had to rub them off mine, but one was still hard for some reason and while trying to scrape away at it it popped, oops. Luckily over a sink though, but a bummer nonetheless.

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