AnswersFirst Semester BiologyDNA and RNA Structure

DNA and RNA Structure Answers

0 verified answers2 views
1
Free Preview

Which represents a strand of RNA bases?

A
TGGCTCGAA
B
UGGCUCGAA
C
GTTAGTGCC
D
CAATCTAGG
2
Free Preview

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
3

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.
4

Question is locked

Answer not available
5

Question is locked

Answer not available
6

Question is locked

Answer not available
7

Question is locked

Answer not available
8

Question is locked

Question illustration
Answer not available
9

A single strand of DNA helix has the code ATAGGC. Which would be the complementary code on the other strand of the helix?

A
AUACCG
B
CGCTTA
C
GCGAAT
D
TATCCG
10

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.
11

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.
12

Where is the DNA located in a eukaryotic cell?

A
ribosomes
B
nucleus
C
cytoplasm
D
cell membrane
13

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?

Question illustration
A
phosphate
B
uracil
C
deoxyribose
D
ribose
14

On an RNA molecule, which would base pair with adenine?

A
thymine
B
guanine
C
cytosine
D
uracil
15

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
16

Which base is found only in RNA?

A
ribose
B
thymine
C
uracil
D
deoxyribose

Did you find these answers helpful?

More from this Course

Quiz
23 verified answers

DNA and RNA Structure

Quiz
10 verified answers

DNA and RNA Structure

Quiz
10 verified answers

DNA Mutations