Biology 11/9/2011

-Prepare for final DNA/PCR lab write up.

-Alu-PCR crossword puzzle due Wed. 11/16/2011.

Earth Science 11/8/2011

ALL Classes:

Measurement / Metric Quest next class-  STUDY YOUR NOTES!!!

Dimensional Analysis problems worksheet - show all units and work

3rd period only!:  Finish Final write up of mass Lab for Tuesday 11/15/2011

the FD will be on a separate sheet(s) of paper from your rough draft , one for each student.

Title:  Just how much Rubber is in a Rubber Stopper?

           

Question:  How will the rubber stopper’s actual metric mass compare (more, less or same mass) to the converted mass taken from posted English standard measurements?

Hypothesis:  The Rubber stopper’s actual mass will be________________ then/as the posted mass.

Test:  By using a metric balance to determine the actual mass of a Rubber stopper, we can convert ounces to grams for the posted mass and compare to the actual mass found using a scale.

Materials:  metric balance (triple beam pan balance), rubber stoppers of varying size, (calculator)

Procedures:  Make a diagram!!

1. Convert the posted mass from oz → g using the following formula 1oz. = 28.3 g 
2. Take the mass measurement of the rubber stopper on the metric balance.
3. Do this for four different rubber stoppers with different posted masses (each table member should do all parts of the experiment for at least one sinker)
4. Subtract the measured mass in grams from the posted mass in grams to determine the relative error.  You may disregard any negative numbers9 take an absolute value of your result).
5. Take the relative error in grams and divide by the converted posted mass, in grams, and multiply by 100 to determine the percent error.

Data:

Rubber stopper #	Posted mass Converted (g)	Measured mass (g)	Relative Error	% error

Observations: 

Analysis:  include your calculations and math work for doing the oz-g conversions, relative and percent error. 

Make a Bar graph of actual versus converted mass values of the rubber stoppers used.

Conclusion: (restate the hypothesis, explain how you answered the question or not and compare numeric results to prove or refute your hypothesis, discuss observations as possible errors and propose a next step and who outside of this science class might care about your results)

Earth science accepted values for object volumes

object		Accepted values
1*		157 cm3
2*		159 cm3
3*		140 cm3
4*		165 cm3
5*		251  cm3
6*		237 cm3
7*		160 cm3
8*		257 cm3
9*		249 cm3

Biology Nov. 7th - Nov 16th

We have started our DNA/PCR multiday lab.  We will be doing strenuous lab activities over the next 3-4 periods and then a Final lab write up of the activity will be due Friday Nov. 18th.: Most activities will be done in the lab so there will be very little homework until the final write up , worth 1000 points, is due friday, 11/18/2011!!

11/7  -Day 1, =  Dna isolation ;  11/9-Day 2= DNA prep for PCR ;  11/14 - Day 3 Run of amplified DNA thru Gel Electrophoresis ; 11/16 - Day 4 reading of stained gels and photos. 

Biology 11/3/2011

Get your informed consent form signed to be able to use your own DNA for the 3-4 class long Biotech labs begining on Monday!!

Earth science 3rd period

See post on 10/31 for Volume lab guide sheet

3*	pb/gb/gc
	ML	ML	ML	ML	ML	ML	ML	ML	ML
#1	165/150/155	180/175/157	170/150/152	160/150/154
#2								170/170/155
#3		150/150/136	160/140/137	140/150139/	140/175/134		160/150/138
#4					180/175/165			180/125/164
#5		260/260/251
#6	250/250/237			240/225/235			240/230/220	250/240/235
#7	180/150/159		170/150/155				160/150/140		140/200/193
#8	280/250/260		270/260/248	260/250/255	240/250/253
#9		260/275/242			220/250/235	//250	250/240/230	260/255/247
	% Error+  absolute value of    [ (Accepted volume - Experimental vol.)/accepted volume] * 100%

biology 11/1/11

1) Finish DNA spooling worki sheet for Kiwi DNA extracton

2) Get your Informed consent form signed for DNA lab

3) Read and notes for pgs 363-375, middle of the page.  Ch 13.2 and some of 13.3