Today H period tried using the ivy from behind DeNobili and had moderate success. One thing we learned is that the infiltration of the leaf disks works better when there are fewer disks in the syringe.
We will no longer add baking soda to the cup, just the baking soda and water solutions.
You may choose to change the concentrations of the solutions to 0.5%, 1% etc. Tomorrow we will make the final decision for the concentrations.
Tuesday, May 8, 2012
Monday, May 7, 2012
Floating Leaf Disk Assay
In addition to the procedure in the post below, here are some notes:
Add 2.5g of Sodium Bicarbonate (not 3cm)
The independent variable you decided on is to vary the concentration of sodium bicarbonate in solution:
2% (0.15g)
4%
6%
8%
1%
To ensure the 'freshness' of the leaves, we will use ivy from the wall behind the science labs.
Add 2.5g of Sodium Bicarbonate (not 3cm)
The independent variable you decided on is to vary the concentration of sodium bicarbonate in solution:
2% (0.15g)
4%
6%
8%
1%
To ensure the 'freshness' of the leaves, we will use ivy from the wall behind the science labs.
Friday, May 4, 2012
Photosynthesis IA
Read about your next IA here. Take notes on the procedure. We will be starting this IA on Monday.
Wednesday, May 2, 2012
Photosynthesis PowerPoints
Below are the PowerPoints from i-biology.net. On Monday we will be starting your last IA of the year (a DCP and CE).
Topic 3.8 (Core)
Topic 3.8 (Core)
Photosynthesis (C4 & AHL)
View more presentations from Stephen Taylor
Tuesday, May 1, 2012
DBQ's - Photosynthesis
That's right, it's been a while since your last DBQ. Today we worked through the DBQ's on page 105 and 106 as a class.
Remember that your Design IA is due on Friday!
Remember that your Design IA is due on Friday!
Friday, April 27, 2012
Design IA #2 - Enzymes
Below is a table with those of you who know what enzyme, IV, DV and type of measurement you will be using for your IA. If over the weekend you decided to change your design, please let me know.
If your name is not listed or if your information is incomplete, get going!
Remember to have a sample data table in your design as well as a place to record qualitative observations / data as well.
Name
|
Enzyme
|
I.V.
|
D.V.
|
Measured with
|
Gabri
|
Lactase
|
Δ pH
|
Δ temp.
|
Temp. probe
|
Sebastian
|
Salivary amylase
|
Δ pH
|
Time of Rxn
|
|
Aleksa
|
Peroxidase
|
Δ pH
|
Δ temp
|
Temp probe
|
Sofia
|
Pepsin
|
Δ pH
|
Δ temp
|
Temp probe
|
Csilla
|
Amylase
|
[enzyme]
|
Δ temp
|
Temp probe
|
Thais
|
Lactase
|
|||
Lud
|
Salivary Amylase
|
[enzyme]
|
Δ in [sugar]
|
Glucose meter
|
Zoe
|
Pectinase
|
Δ pH
|
Volume of juice
|
cm3
|
Dani
|
Lactase
|
Δ pH
|
Δ temp.
|
Temp. probe
|
If your name is not listed or if your information is incomplete, get going!
Remember to have a sample data table in your design as well as a place to record qualitative observations / data as well.
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