stem cell

Hello class,

I hope you enjoyed your trip through the caves.  Those videos should be watched on a large screen like in class.  By the way, about a year after this video came out, they discovered this cave in mexico.  Kinda puts teh chandelier room to shame, huh?

We'll be learning about how DNA is used by the cells next.  Please read section 3.3 from the book for friday.
 
Here is an excellent stem cell article that Adrienne Jenq found.  I think you'll enjoy it.  Please read this article for Friday's class.

Also, here's the intriguing idea that cancer tumors may have their own stem cells!  Check it out :-)

mitosis

The plan for class today:

Go to this university of Arizona website and go through the online onion root tip lab.  Please make the data table as they describe, then do the calculations that they ask. I will collect your data tomorrow.

The website also has some excellent review material that you can look over.  It will help youto understand the stages.

Cell division rules!

Period 8 Group Us (sans y chromosomes)

All units are in grams.

Control (100% water):

Original                                    after

0.0875                                                3.70

3 M:

0.0830                                                1.89

5 M:

0.0825                                                1.90

8 M:

0.0840            `                                    1.66

allies groups data

concentration                        grams before                        grams after                        percent

0 percent                        .56                                    .71 g                                    127.9%

1 percent                        .58                                    .72                                    124.1%

1.5 percent                        .58                                    .70                                    122.4%

2 percent                        .61                                    .73                                    119.7%

2.5 percent                         .63                                    .73                                    115.9%

3 percent                        .54                                    .60                                    111.1%

3.5 percent                        .52                                    .65                                    125%

4 percent                        .57                                    .66                                    115.8%

4.5 percent                        .57                                    .64                                    112.3%

5 percent                        .59                                    .62                                    105.1%

1st period data group 1

Control                   Before                        After                         Difference 

Control                     2.1g                         2.83g                 +.73g

2.5%                           2.1g                        2.7g                        +.57g

5%                               2.1g                        2.57g                        +.47g

7.5%                                1.8g                        2.22g                        +.42g

10%                               2.0g                        2.32g                        +.32g

1%                               1.8g                        2.36g                        +.56g            


1st Period Data Group 2

Control            1%            2%            4%            5%            7%           

T1            1.84                        1.85            1.89            1.82            1.76            1.81

T2            1.89                        1.81            1.84            1.87            1.72            1.71

All lengths at 3.5 cm

Final:

T1            3.95cm            3.93            3.65            3.94            4.21            4.11

            2.16 g                        2.13            2.10            2.03            1.97            2.07

T2            3.95 cm            4.00            3.89            3.73            4.30            3.84

            2.34 g                        2.43            2.41            2.40            2.29            2.28

Group four project

Attention all:

The newest lists are available on the moodle.  Periods 7 and 8 have seen this already but if you are in period one, please check the list.  Included on the list is the proper meeting time.  See you tomorrow!