Answer to Question #59106 in Cell Biology for tracy guido

Question

51.
Which of the following are mechanisms by which cells communicate with each other? Check all that apply. More than one
cell junction
translation
pancrine signaling
cell cell recognition

56.
Classify the following statements as describing a protein kinase or a protein phosphatase.
protein kinase protein phosphatase
1. binds adenosine triphosphate 2. transfers a phosphate group to a protein. 3. dephosphorylates a protein 4. releases inorganic phosphate

Answer 1

51. Correct answer - cell junction, pancrine signaling, cell cell recognition.
All these mechanisms are used by the cells to ither pass ions and small organic molecules to each other, change behaviour based on the obtained information, or to send information to neigbour cells.
Translation is the process which occurs completely inside the cell and does not affect other cells.

56. Protein kinase:1. binds adenosine triphosphate (will use its phosphate group to deliver it to some protein) 2. transfers a phosphate group to a protein (protein kinases do this).
Protein phosphatase: 3. dephosphorylates a protein (protein phosphatases detauch the phosphate group from proteins) 4. releases inorganic phosphate (detouched phosphate group is simply released)