1. Sect. 9.2: “The Struct. Of DNA” Sect. 9.3: “DNA Replication”
Ch. 9 Test Prep.
Sect. 9.2: “The Struct. Of DNA”
Sect. 9.3: “DNA Replication”

2. A. DNA C. RNA B. ATP D. NADPH C. RNA
A particular nucleotide is composed of ribose sugar, uracil, and a phosphate group. Identify the biomolecule it belongs to.
A. DNA C. RNA B. ATP D. NADPH C. RNA

3. A. CTTGTAGTC C. CTTGTUGTC B. CUUGUAGUC D. CTTCTUGTC A. CTTGTAGTC
The image below shows one of the strands of a double stranded DNA molecule. Which of the answer options represents the correct complementary strand of DNA?
A. CTTGTAGTC C. CTTGTUGTC B. CUUGUAGUC D. CTTCTUGTC A. CTTGTAGTC

4. Identify the following biomolecule.
A. Carbohydrate C. Protein
B. ATP D. Nucleotide
D. Nucleotide

5. Which of the following is a base present in RNA but absent in DNA?
A. Guanine C. Cytosine B. Adenine D. Uracil D. Uracil

6. Which of the following is present in DNA but absent in RNA?
A. Deoxyribose sugar C. Phosphate group B. Adenine base D. Guanine base A. Deoxyribose sugar

7. Use the following diagram to answer the question.
Which number represents a nucleotide? 4

8. Which of the below listed features does a DNA molecule share with an RNA molecule?
A. Nitrogenous base B. 5 carbon sugar C. Phosphate group D. Double helical structure A, B and C

9. Which of the following correctly represents the chemical composition of a nucleotide?
A. A sugar and a nitrogenous base B. A sugar, a nitrogenous base, and a phosphate group C. A polymer of nitrogen bases D. A nitrogenous base and a phosphate group

10. What nitrogen base is incorporated in a RNA nucleotide, but not in a DNA nucleotide?
A. Adenine
B. Cytosine
C. Uracil
D. Guanine

11. What is the name of the enzyme responsible for adding complementary nucleotides to the exposed nitrogen bases during DNA replication? It also has a proofreading role.
A. RNA helicase C. DNA helicase B. RNA polymerase D. DNA polymerase D. DNA polymerase

12. Nucleotides are held together by what bonds?
James Bond
B. metallic bonds
C. covalent bonds
D. Ionic bonds

13. A. 3 and 4 C. 4 and 1 B. 2 and 5 D. 1 and 6 B. 2 and 5
The image below shows a DNA double helix. Which of the base pairs are wrongly represented?
A. 3 and 4 C. 4 and 1 B. 2 and 5 D. 1 and 6 B. 2 and 5

14. Nucleotides come together to form what kind of DNA structure?
A. double helix B. stem helix C. twisted helix D. compound helix

15. Use the following diagram to answer the question.
Which number represents complementary base pairing? 1

16. With regards to the nitrogen bases, how are they paired to evidently connect nucleotides to one another?
A. A pairs with G, T pairs with C B. A pairs with T, G pairs with C C. T pairs with G, A pairs with C D. None of the nitrogen bases are able to pair

17. Which nitrogen bases within a nucleotide are considered purines and which are considered pyrimidines?
A. A and C are purines, T and G are pyrimidines B. A and T are pyrimidines, G and C are purines C. A and G are pyrimidines, T and C are purines D. A and G are purines, T and C are pyrimidines

18. What is the name of the enzyme responsible for splitting the hydrogen bonds that hold the DNA double helix together?
A. RNA helicase C. DNA helicase B. RNA polymerase D. DNA polymerase C. DNA helicase

19. Use the following diagram to answer the question.
Which number represents a 5-Carbon Sugar? 2

20. AATCGGTAGC A. TTAGCCATCG B. GCATTGATGG C. AATCGGTACT D. CGGTACGTAA
The following strand of nucleotides are provided to you, what would be the complementary strand of nucleotides?
AATCGGTAGC A. TTAGCCATCG B. GCATTGATGG C. AATCGGTACT D. CGGTACGTAA

21. Use the following diagram to answer the question.
Which number represents a phosphate group? 3