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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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 model3
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.4
A single strand of DNA helix has the code ATAGGC. Which would be the complementary code on the other strand of the helix?
A
AUACCGB
CGCTTAC
GCGAATD
TATCCG5
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
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
ribose7
Which represents a strand of RNA bases?
A
TGGCTCGAAB
UGGCUCGAAC
GTTAGTGCCD
CAATCTAGG8
What did Chargaff discover while studying bases in the DNA of organisms?
A
The bases in the DNA of each organism were unique.B
The ratios of thymine and adenine were similar, as were the ratios of guanine and cytosine.C
The overall percentages of bases were different from one organism to the next.D
There were equal amounts of all four bases in every organism, or 25 percent of each base.9
Which base is found only in RNA?
A
riboseB
thymineC
uracilD
deoxyribose10
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 synthesisDid you find these answers helpful?
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