Multiple Choice
Kinases and phosphatases are essential in the cell because they
A) sense short poly A tails in mRNA as a signal to degrade the mRNA.
B) are enzymes that destroy damaged proteins.
C) help turn proteins "on and off" through changes in phosphorylation status.
D) destroy second messengers, thereby turning off a signal transduction pathway.
E) all of the above
Correct Answer:
Verified
Correct Answer:
Verified
Q2: MAPKs are activated by<br>A)microtubules.<br>B)methylation.<br>C)membranes.<br>D)mitogens.<br>E)methionine.
Q3: Which of the following is NOT a
Q4: The Ga- subunit is responsible for activation
Q5: In ulcerative colitis, gas within the lumen
Q6: Which of the following statements regarding Fas-
Q7: G protein- adenyl cyclase activity has been
Q8: When nitric oxide is used in the
Q9: IL- 2 is a growth factor that
Q10: Base your answers to the questions below
Q11: Desensitization of a cell to a ligand