Week 6 Guide for Independent Learning As you read sections 11.1-2, 12.1-2, and Ch. 13, formulate answers to these questions. 1. Describe the nature of a ligand-receptor interaction and state how such interactions initiate a signal transduction system. 2. Compare and contrast the structure and function of G-protein-linked receptors, tyrosine-kinase receptors, and ligand-gated ion channels. 3. Describe how phosphorylation propagates signal information. 4. Describe how cyclic adenosine monophosphate (cAMP) is formed and how it propagates signal information. 5. Explain how cell division functions in reproduction, growth, and repair. 6. Describe the major events of the cell cycle that enable the genome of one cell to be passed on to two daughter cells. 7. List the phases of mitosis and describe the events characteristic of each phase. 8. Draw the spindle apparatus, label the following structures: centrosomes, kinetochore microtubules, nonkinetochore microtubules, asters, and centrioles (in animal cells). 9.
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