1. DNA Structure and Replication REVIEW GAME

2. What is the correct relationship among DNA, genes and chromosomes?
A gene contains many chromosomes which are composed of proteins
A chromosome contains many genes which are composed of DNA
A gene is composed of proteins which are found on the chromosomes
A chromosome contains many genes which are composed of proteins

3. What is the correct relationship among DNA, genes and chromosomes?
A gene contains many chromosomes which are composed of proteins
A chromosome contains many genes which are composed of DNA
A gene is composed of proteins which are found on the chromosomes
A chromosome contains many genes which are composed of proteins

4. DNA and RNA are polymers of…
A. fatty acids
B. nucleotides
C. monoglycerides
D. amino acids

5. DNA and RNA are polymers of…
A. fatty acids
B. nucleotides
C. monoglycerides
D. amino acids

6. What are the parts of a nucleotide. a
What are the parts of a nucleotide?   a. a phosphate, five-carbon sugar, and a nitrogen base b. a group of linked amino acids c. one half of a DNA molecule d. a protein, a sugar, and a phosphate e. a phosphate, a six-carbon sugar, and a nitrogen base

7. What are the parts of a nucleotide. a
What are the parts of a nucleotide?   a. a phosphate, five-carbon sugar, and a nitrogen base b. a group of linked amino acids c. one half of a DNA molecule d. a protein, a sugar, and a phosphate e. a phosphate, a six-carbon sugar, and a nitrogen base

8. Which parts of a nucleotide make-up the backbone of a nucleic acid molecule?   A) phosphate
B) sugar
C) nitrogen base
D) A and B
E) B and C

9. Which parts of a nucleotide make-up the backbone of a nucleic acid molecule?   A) phosphate
B) sugar
C) nitrogen base
D) A and B
E) B and C

10. In double stranded DNA, the weak bonds between complementary nitrogen bases involve:   a. RNA b. DNA c. hydrogen bonds d. five-carbon sugars e. sulfur

11. In double stranded DNA, the weak bonds between complementary nitrogen bases involve:   a. RNA b. DNA c. hydrogen bonds d. five-carbon sugars e. sulfur

12. Which of the following is NOT one of the nitrogen bases in a DNA molecule?   a. adenine b. cytosine c. uracil d. thymine e. guanine

13. Which of the following is NOT one of the nitrogen bases in a DNA molecule?   a. adenine b. cytosine c. uracil d. thymine e. guanine

14. Cytosine will form a base pair only with: a. cytosine b. adenine c
Cytosine will form a base pair only with:   a. cytosine b. adenine c. thymine d. uracil e. guanine

15. Cytosine will form a base pair only with: a. cytosine b. adenine c
Cytosine will form a base pair only with:   a. cytosine b. adenine c. thymine d. uracil e. guanine

16. |||||||||||||||| _________________________________
What is the base sequence of the DNA strand that would be complementary to the following single-stranded DNA molecule?
GGATCTGATCCAGTCA
|||||||||||||||| _________________________________

17. |||||||||||||||| CCTAGACTAGGTCAGT
What is the base sequence of the DNA strand that would be complementary to the following single-stranded DNA molecule?
GGATCTGATCCAGTCA
|||||||||||||||| CCTAGACTAGGTCAGT

18. Identify components 1 and 2 of the molecule to the right.

19. Identify components 1 and 2 of the molecule to the
right.
1 = a phosphate
2 = deoxyribose sugar  You know it’s DNA since it is double stranded!

20. In this DNA, which of
the following can 3 and 4 be?
A and G
U and A
C and C
A and T

21. In this DNA, which of
the following can 3 and 4 be?
A and G
U and A
C and C
A and T

22. In this DNA,
3 and 4 are held
Together by
Barry Bonds
Covalent Bonds
Peptide bonds
Hydrogen bonds

23. In this DNA,
3 and 4 are held
Together by
Barry Bonds
Covalent Bonds
Peptide bonds
Hydrogen bonds

24. DNA replication…
A. occurs by the addition of nucleotides to the end of the DNA molecule.
B. results in the formation of four new DNA strands.
C. produces two brand new DNA strands that do not resemble the original strand
D. uses each strand of a DNA molecule as a template for the creation of a new strand.
E. begins when two DNA molecules join together to exchange segments.

25. DNA replication…
A. occurs by the addition of nucleotides to the end of the DNA molecule.
B. results in the formation of four new DNA strands.
C. produces two brand new DNA strands that do not resemble the original strand
D. uses each strand of a DNA molecule as a template for the creation of a new strand.
E. begins when two DNA molecules join together to exchange segments.

26. Describe what is happening in each step of DNA
replication (figure to right)

27. Describe what is happening in each step of DNA replication (figure to right)
1: one parent double stranded DNA
2: DNA unzips and unwinds
3: Complementary nitrogen bases match up forming a new strand of DNA using an old strand as a template
4: Two daughter double helices; each ½ old and ½ new

28. The enzyme ________ unzips and unwinds the DNA molecule.
A) DNA polymerase
B) helicase
C) primase
D) DNA ligase
E) unzipase

29. The enzyme ________ unzips and unwinds the DNA molecule.
A) DNA polymerase
B) helicase
C) primase
D) DNA ligase
E) unzipase

30. The enzyme ________ assembles a new strand of DNA according to the base pairing rules and using an old strand of DNA as the template..
A) DNA polymerase
B) helicase
C) primase
D) DNA ligase
E) unzipase

31. The enzyme ________ assembles a new strand of DNA according to the base pairing rules and using an old strand of DNA as the template..
A) DNA polymerase
B) helicase
C) primase
D) DNA ligase
E) unzipase

32. A double-stranded DNA is 21% cytosine.
What is the percent of thymine in that DNA?

33. A double-stranded DNA is 21% cytosine.
What is the percent of thymine in that DNA?
29 % thymine

34. A double-stranded DNA is 38% adenine.
What is the percent of cytosine in that DNA?

35. A double-stranded DNA is 38% adenine.
What is the percent of cytosine in that DNA?
12 % cytosine

36. In the semi-conservative DNA replication, daughter DNA molecules consist of: a. one-half of the molecules with two parental strands and one-half of the molecules with two new strands b. all molecules with interspersed parental and new segments c. all molecules with one parental and one new strand d. all molecules with two new strands

37. In the semi-conservative DNA replication, daughter DNA molecules consist of: a. one-half of the molecules with two parental strands and one-half of the molecules with two new strands b. all molecules with interspersed parental and new segments c. all molecules with one parental and one new strand d. all molecules with two new strands

38. Two differences between DNA and RNA are that only the RNA contains…
a) ribose and uracil
b) deoxyribose and uracil
c) deoxyribose and thymine
d) ribose and adenine
e) ribose and thymine

39. Two differences between DNA and RNA are that only the RNA contains…
a) ribose and uracil
b) deoxyribose and uracil
c) deoxyribose and thymine
d) ribose and adenine
e) ribose and thymine