DNA and RNA Structure Answers
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1
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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.2
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The diagram shows a nucleic acid in the shape of a helix.Which sugar is present in the nucleic acid that is represented in the diagram?
A
uracilB
thymineC
deoxyriboseD
ribose3
Why can uracil be used as a “clue” to identify RNA in a strand?
B
Because uracil is found in both DNA and RNA.B
Because uracil indicates a damaged DNA strand.B
Because uracil is always paired with thymine.B
Because uracil is unique to RNA.4
On an RNA molecule, which would base pair with adenine?
t
thymineg
guaninec
cytosineu
uracil5
Which base is found only in RNA?
r
riboset
thymineu
uracild
deoxyribose6
Which structural component is found in DNA but not in RNA?
r
ribosed
deoxyribosep
phosphate groupn
nitrogenous base7
What is the role of RNA?
t
to provide the original blueprint for protein productiont
to move information from the ribosomes to the nucleus for protein synthesist
to break down proteins into amino acid monomerst
to move information from the nucleus to the ribosomes for protein synthesis8
DNA is a nucleic acid polymer composed of which repeating structural unit?
n
nucleotidesp
phosphate groupsr
ribosomesp
proteins9
Which structural characteristic is seen in RNA but not in DNA?
d
double strandsa
a single strandc
chains of nucleotidesa
a helical shape10
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 + uracilDid you find these answers helpful?
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