Coupon Accepted Successfully!


RNA Structure

Although we will discuss its function in the next chapter, this is an opportune time to examine the structure of RNA (ribonucleic acid), a molecule closely related to DNA. RNA is also a polymer of nucleotides, but differs from DNA in three major respects:
RNA is usually single stranded, meaning it is not usually found base paired with another RNA molecule; the sugar in an RNA nucleotide is ribose, not deoxyribose. The difference is found on the 2’ carbon of the sugar: ribose has an OH group attached while deoxyribose has only an H;
A nitrogenous base called uracil (U) substitutes for thymine (T) in RNA. Uracil is similar in structure to thymine, and will base pair with adenine (this will become important when we discuss transcription and translation).

Test Your Skills Now!
Take a Quiz now
Reviewer Name