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What Is the Purpose of the Poly(A) Tail on Eukaryotic

Question 22

Multiple Choice

What is the purpose of the poly(A) tail on eukaryotic mRNA?


A) binds to short poly(U) molecules forming duplex RNA that resists degradation
B) forms a stem loop to aid in transport to the cytosol
C) aids in transport to the lysosome for degradation once the ribosome is finished with it
D) binds to the poly(A) binding protein to prevent exonuclease activity
E) none of the above

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