Be sure to read chapter 13 for Monday!

Group assignments. Each activity is listed in order of presentation. The numbers indicate which group is responsible. We will start presenting these on Wednesday, March 6^th.

For each type of signal transducer, give an example and answer the following questions:

• Where are they found?
• What type of signal is transduced (what are they used for)?
• How does the transducer work?
• How is the signal turned off?
• What conditions/diseases occur when there is a defect in the transducer?

1. Votage gated channels

2. Ligand gated channels

3. Receptor enzymes

4. Serpentine receptors

The following second messenger are important for intracellular communication. Choose one and give an example of how it works-explain the process in detail.

2. cAMP

3. diacyl glycerol

4. phosphotidyl inositol

1. Calcium

Choose one of the following control mechanisms, explain how it works, and give an example of a system where it is used.

3. Phosphorylation

4. Protein kinases

1. Tumor suppressor genes

2. Apoptosis