Which of the following statements regarding the Ras protein is false?
A) Ras is monomeric.
B) It is regulated by GTPase activating proteins.
C) The ligands are largely steroid hormones.
D) It is regulated by Sos, a guanine nucleotide exchange factor.
E) Ras activates a cascade of phosphorylation events.
Correct Answer:
Verified
Q27: You have recently identified a molecule that
Q28: In designing a new drug that may
Q29: Phosphatases are enzymes that
A)add phosphate groups.
B)are always
Q30: Which of the following are associated with
Q31: If one homogenizes liver cells,separates the membranes
Q33: Prostaglandins are not
A)endocrine hormones.
B)important in smooth muscle
Q34: Which of the following signalling proteins is
Q35: Kinases are enzymes that
A)add phosphate groups.
B)do not
Q36: You wish to determine if cytosolic calcium
Q37: MAPKs are activated by
A)methylation.
B)microtubules.
C)membranes.
D)mitogens.
E)methionine.
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