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GEFs (Guanine Nucleotide Exchange Factors) Bind to Rab and Block

Question 42

Multiple Choice

GEFs (guanine nucleotide exchange factors) bind to Rab and block phosphorylation of GDP. When GTP is not bound to Rab, vesicular coating and transport are inhibited.


A) Both sentences are true
B) Both sentences are false
C) The first sentence is true and the second sentence is false
D) The first sentence is false and the second sentence is true

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