Chapter 9
Biology: How Life Works · 8 exercises
Problem 1
Name the four essential elements in cell communication.
4 step solution
Problem 3
Describe one way in which endocrine, paracrine, autocrine, and contact- dependent signaling pathways are similar to one another and one way in which they are different from one another.
4 step solution
Problem 4
Explain how cells respond to external signals, even when those signals cannot enter the cell.
4 step solution
Problem 5
Explain how signals can specifically target only some cells, even if they are released into the bloodstream and come into contact with many cells.
4 step solution
Problem 6
Describe three different responses of a cell-surface receptor on binding a signaling molecule and undergoing a conformational change.
3 step solution
Problem 7
List several responses a cell might have to a signaling molecule.
5 step solution
Problem 8
Compare and contrast receptors associated with polar and nonpolar signaling molecules.
5 step solution
Problem 10
Describe three ways in which the response of a cell to a signal can be terminated.
3 step solution