Step 1 - Biochemistry Q-Bank
USMLE / COMLEX - Step 1
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Board Review Questions
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1. Biochemistry & Genetics
Q. Which of the following features identifies a structure as RNA (rather than DNA)?
a
Presence of adenine
b
Presence of thymine
c
Phosphate backbone
d
Double-ringed purines
e
Hydroxyl group at the 2' carbon
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