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.

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.

Photosynthesis - Topic 3

Today we continued review photosynthesis and the information in topic 3.

Photosynthesis

Today we started to learn about Photosynthesis.  For homework, watch the video below and take notes on the details of the light dependent reactions.  You can take notes in the packet you received in class today.

You can read about each of the components from the video and see still images here.

Design IA

Tomorrow will be the last time you will be able to work on your Enzymes Design IA (see below) in class.  On Thursday we will start our last topic of the year:  Photosynthesis (get ready for another great song!)

Enzymes Design IA

On May 4th you will have a Design IA due.  This is only the design component, you will NOT need to actually do this IA.  Since you don't need to actually conduct this investigation, a shortage of equipment will not be a limiting factor for your experiment.

You will design an experiment that specifically addresses this statement:

Investigate a factor that may effect enzyme activity.

Go here to see a list of common enzymes in the human body.  Recall the factors that affect enzyme activity (temperature, pH, substrate concentration).  You will need to research your enzyme and include appropriate background information.  Make sure you cite these sources!!!!

The blue and green book reminds you that time should NEVER be an independent variable (pg. 5).

Your experiment can NOT be the same as anyone else's in the course.

E period - you will have class time on Monday and Wednesday to work on this.

H period - you will have class time on Tuesday and Wednesday to work on this.

Lastly, please, please, please remember that this is one aspect of your IB grade that YOU have complete control over!

Starting to get it....

Congratulations to all of you for the scores on your recent test on cellular respiration and enzymes.  This is not an easy topic and you all did well.

Cellular Respiration Basics

Respiration (Core)

View more presentations from Stephen Taylor

Cellular Respiration Review & an Update

Today students worked in small groups to review cellular respiration.

And now for the update:

On Friday we were going to review your internal assessments, however I think you would all benefit from the extra day to prepare for the test, so instead of having your test on Thursday, you will have your test on Friday.

On Thursday in class we will discuss your internal assessments. 

Wrapping up Cellular Respiration

Today (or tomorrow for H period) we wrapped up cellular respiration.  For homework, label the electron micrograph and discuss the relationship between the structure of a mitochondrion and its function.