Apologia Biology Module 1
Yesterday was our first day at co-op and we covered:
- What criteria is needed for something to be alive.
- The difference between prokaryotic and eukaryotic cells.
- The Biological Key. We went through the key using the raccoon as an example. The students were able to use the key without any problems. I think they rather enjoyed it.
- Using the microscope, which we will go over again next week.
- Looked at cheek cells under the microscope.
Looking for cheek cells was the fun part of the class. First we obtained some cheek cells using a Q-tip. I thought the young women would say ewwww…, but they didn’t.
The cells were carefully rubbed onto the clean slide and then a blue stain was applied to the smudge. The blue is so you can actually see the cells.
Once the stain is on, the students carefully placed a slipcover over the area. See How To Make A Wet Mount for instructions on how to properly place a slipcover on the slide.
Now it is time to check out the cells. We started with the lowest objective (4x). I was delighted when I heard the excitement from the students at seeing their first cell, even though it was only a blue dot.
Next came the higher objectives. One student had an excellent sample of the cells. I tried to get a picture, but this is all I could get. The actual cells were well defined.
After this little experiment, one young man decided to go a little further to find out what his nose’s cells looked liked. Don’t ask me why he did that, I just don’t know. lol When the rest of the class found out what he was doing, they all ran over to have a look-see.
The young man on the left is the one who found the best looking cheek cells. He has a good eye and a steady hand. I wish I had a way to get a better picture of it.
The first day went well. I am looking forward to next week.