DNA and RNA Structure Answers

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1
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Which structural component is found in DNA but not in RNA?

A
ribose
B
deoxyribose
C
phosphate group
D
nitrogenous base
2
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Which of the following could be a nucleotide of RNA?

A
deoxyribose + phosphate group + thymine
B
deoxyribose + phosphate group + uracil
C
ribose + phosphate group + thymine
D
ribose + phosphate group + uracil
3

What is the role of RNA?

A
to provide the original blueprint for protein production
B
to move information from the ribosomes to the nucleus for protein synthesis
C
to break down proteins into amino acid monomers
D
to move information from the nucleus to the ribosomes for protein synthesis
4

Which represents a strand of RNA bases?

A
TGGCTCGAA
B
UGGCUCGAA
C
GTTAGTGCC
D
CAATCTAGG
5

Where is the DNA located in a eukaryotic cell?

A
ribosomes
B
nucleus
C
cytoplasm
D
cell membrane
6

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.
8

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.

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