Biology, 13.10.2020 15:01, lovelyheart5337
Figure 1 represents a nucleic acid fragment that is made up of four nucleotides linked together in a chain.
The figure presents a single chain of four linked nucleotides. The 5 prime end is indicated at the beginning of the chain, and the 3 prime end is indicated at the end of the chain. Each nucleotide is composed of a pentose sugar, a nitrogenous base bonded to the first carbon of the sugar, and a phosphate group bonded to the fifth carbon of the sugar. Two of the bases are double-ring purines and two of the bases are single-ring pyrimidines. Each phosphate group is shown to be negatively charged. The pentose sugar at the 3 prime end of the chain has two OH groups bonded to it, one each at carbon 2 and carbon 3.
Figure 1. Nucleic acid fragment
Which of the following characteristics of Figure 1 best shows that the fragment is RNA and not DNA?
The 5′ to 3′ orientation of the nucleotide chain
The 5′ to 3′ orientation of the nucleotide chain
A
The identity of each nitrogenous base
The identity of each nitrogenous base
B
The charges on the phosphate groups
The charges on the phosphate groups
C
The type of bond linking the nucleotides together
Answers: 1
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Figure 1 represents a nucleic acid fragment that is made up of four nucleotides linked together in a...
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