Microscope+and+Cells

Microscope Cell Structure Function

Harvard Cell video (the music version) media type="youtube" key="wJyUtbn0O5Y" height="315" width="560"

For additional videos, including a (longer) narrated version of the above video click on Harvard's Multimedia Page. It's worth checking out the video, because the structures are actually identified. It's a little complicated to get to the actual video, though. The following document shows you how to get there.

The Microscope Lab:

Use this link to re-familiarize yourself with the parts of the microscope and their function: @http://virtualurchin.stanford.edu/microtutorial.htm

We looked at a letter e to discover how the microscope shows the specimen. You can review that material on this site: http://www1.broward.edu/~ssimpson/letterE.htm

We look at depth of focus with colored threads. There is an image on the same site: http://www1.broward.edu/~ssimpson/letterE.htm. By using a high mag lens, you can make sure that only one thread is in focus as a given time.

We also did some calculations with a microscope. You can use the following images to re-work the problem on your own:

This is what the ruler looked like under the low magnification. Remember that the smallest division on a metric ruler is 1 mm. (image from: http://www.saskschools.ca/curr_content/biology20/unit1/UNIT1MODULE2LESSON2.htm)

Based in the calculations in the lab notes, we then estimated the size of a paramecium under high power. (from http://www.gamereplays.org/community/index.php?showtopic=366465

Here is another site that will help you review the material. This site even includes some of the answers to the questions and calculations: @http://www.hobart.k12.in.us/jkousen/Biology/mscope.htm