DNA and RNA Structure Answers
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Which structural component is found in DNA but not in RNA?
A
riboseB
deoxyriboseC
phosphate groupD
nitrogenous base2
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The diagram shows a nucleic acid in the shape of a double helix.Which sugar is present in the nucleic acid that is represented in the diagram?
A
phosphateB
uracilC
deoxyriboseD
ribose3
What is the role of RNA?
A
to provide the original blueprint for protein productionB
to move information from the ribosomes to the nucleus for protein synthesisC
to break down proteins into amino acid monomersD
to move information from the nucleus to the ribosomes for protein synthesis4
Proteins are made in ribosomes, but DNA is stored in the nucleus. How does RNA help in this process?
A
RNA copies DNA and transports it to ribosomes for protein synthesis.B
RNA changes the DNA sequence to create new proteins.C
RNA breaks down DNA so that proteins can be formed.D
RNA helps in the replication of DNA before protein synthesis.5
Which of the following could be a nucleotide of RNA?
A
deoxyribose + phosphate group + thymineB
deoxyribose + phosphate group + uracilC
ribose + phosphate group + thymineD
ribose + phosphate group + uracil6
Which discovery is attributed to Phoebus Levene?
A
extraction and observation of DNAB
identification of ribose and deoxyriboseC
recognition of RNA as DNA’s messengerD
construction of an accurate DNA model7
Which structural characteristic is seen in RNA but not in DNA?
A
double strandsB
a single strandC
chains of nucleotidesD
a helical shape8
DNA is a nucleic acid polymer composed of which repeating structural unit?
A
nucleotidesB
phosphate groupsC
ribosomesD
proteins9
Why can uracil be used as a “clue” to identify RNA in a strand?
A
Because uracil is found in both DNA and RNA.B
Because uracil indicates a damaged DNA strand.C
Because uracil is always paired with thymine.D
Because uracil is unique to RNA.10
On an RNA molecule, which would base pair with adenine?
A
thymineB
guanineC
cytosineD
uracilDid you find these answers helpful?
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