Download Worksheet on Cell Communication

Worksheet 2: Cell Communication
1.
What type of signaling works over great distances, a long duration, and over a diffuse area?
2.
Compare and contrast endocrine and paracrine signaling.
3.
How do hormones travel to their targets in animal cells and in plant cells?
4.
What do cells use to communicate when they are in direct contact with one another?
5.
What are the three stages of the cell signaling process? Briefly describe each.
6.
Define the term Ligand.
7.
What is the difference between a protein kinase and a protein phosphatase?
8.
Draw a G-protein receptor and diagram its signaling cascade.
9.
Draw a Tyrosine-kinase receptor and diagram its signaling cascade.
10.
Draw a ligand-gated ion channel and diagram its signaling cascade.
11.
What types of molecules bind to intracellular receptors?
12.
When testosterone binds to a receptor in the cytoplasm, the complex goes into the nucleus of
the cell and then does what? Sketch this intracellular receptor signaling cascade.