Question 1

What is a component of a single nucleotide?

Accepted Answer

A)   A phosphate group
B)   A six carbon sugar
C)   All five nitrogenous basesD) A) and C)
E) B) and C)

Question 2

What is one of the criteria that all genetic material must meet?

Accepted Answer

A)   It does not contain the information necessary to construct the entire organism.
B)   It must be passed from offspring to parent.
C)   It must be able to be copied.
D)   It must have a limited amount of variation.E) All of the above
F) C) and D) C

Question 3

The researcher(s)  who initially used X-ray diffraction to gather information on the DNA molecule was ________.

Accepted Answer

A)   Franklin
B)   Watson and Crick
C)   Hershey and Chase
D)   Pauling
E)   ChargaffF) None of the above
G) A) and E) A

Question 4

An RNA strand with sequence 5'-GUACAAUGACUUAUGUAC-3' can potentially form which structure?

Accepted Answer

A)   Bulge loop
B)   Internal loop
C)   Multibranched junction
D)   Stem-loopE) A) and D)
F) A) and B)

Question 5

What was the conclusion of the Hershey-Chase experiments?

Accepted Answer

A)   Their results suggested the presence of a transforming principle.
B)   Their results suggested that DNA is a double helix.
C)   Their results suggested that A+G=T+C.
D)   Their results suggested that the DNA is the genetic material.E) None of the above
F) A) and D)

Question 6

The fact that the helixes of the DNA strand are arranged in opposite directions gives DNA its ________ characteristics.

Accepted Answer

A)   antiparallel
B)   complementary
C)   redundant
D)   water-solubleE) A) and C)
F) None of the above

Question 7

The ________ was labeled using the radioisotope 32P in the Hershey-Chase experiments.

Accepted Answer

A)   RNA
B)   DNA
C)   protein
D)   carbohydratesE) B) and D)
F) A) and D)

Question 8

The pyrimidine bases are ________.

Accepted Answer

A)   cytosine, thymine, and uracil
B)   adenine and guanine
C)   adenine and thymine
D)   cytosine and guanineE) A) and B)
F) B) and C)

Question 9

A nucleoside consists of only a five-carbon sugar and a phosphate group.

Accepted Answer

A) True 
 B)False

Question 10

In the Hershey-Chase experiments, the protein coat of the bacteriophage was labeled with the 32P radioisotope.

Accepted Answer

A) True 
 B)False

Question 11

Cells are treated with a drug that blocks purine synthesis. Which bases would not be made in those treated cells?

Accepted Answer

A)   cytosine, thymine, and uracil
B)   adenine and guanine
C)   adenine and thymine
D)   cytosine and guanineE) C) and D)
F) B) and C)

Question 12

B DNA is recognized as a left-handed molecule.

Accepted Answer

A) True 
 B)False  False

Question 13

Which of the following is a correct matching of the researcher with their discovery?

Accepted Answer

A)   Pauling provided information on primary structure in biological molecules.
B)   Franklin suggested that DNA was a helix with more than one strand and that there were about 10 bases per turn of the DNA.
C)   Watson and Crick collected a large amount of X-ray data on the structure of DNA.
D)   Chargaff demonstrated that the adenine and cytosine bases and the uracil and guanine bases interacted in some manner.E) A) and D)
F) B) and C)

Question 14

What were the conclusions of Franklin's work regarding the structure of DNA?

Accepted Answer

A)   It did not have a helical structure.
B)   The helix had more than one strand.
C)   The helix contained about 1 bases per turn.
D)   The helix had only one strand.E) C) and D)
F) A) and B)

Question 15

What is the directionality of the DNA molecule?

Accepted Answer

A)   Front to back
B)   Top to bottom
C)   5' to 3'
D)   3' to 5'
E)   All DNA molecules are different in their directionalityF) A) and D)
G) A) and C)

Question 16

The fact that the type R and S strains of Streptococcus pneumoniae that Griffith worked with possessed small differences in capsule structure satisfies which of the following criteria for genetic material?

Accepted Answer

A)   Transmission
B)   Replication
C)   Information
D)   VariationE) B) and D)
F) A) and B)

Question 17

Which base is not found in DNA?

Accepted Answer

A)   Cytosine
B)   Guanine
C)   Thymidine
D)   Adenine
E)   UracilF) C) and E)
G) A) and D)

Question 18

What is the most complex structure DNA can form?

Accepted Answer

A)   Individual nucleotides
B)   A folded and bended double helix
C)   A single strand of DNA
D)   A DNA double helixE) A) and C)
F) A) and D)

Question 19

What is a characteristic of T2 bacteriophage?

Accepted Answer

A)   It does not require a host cell for replication.
B)   The phage attaches to the cell wall of a target eukaryotic cell.
C)   The phages injects its DNA into the host cell.
D)   The new phages are formed outside the host cell.E) A) and B)
F) A) and C)

Question 20

Avery used the enzyme ________ to remove the proteins from the cell extracts.

Accepted Answer

A)   protease
B)   DNase
C)   RNase
D)   All of the answers are correctE) A) and D)
F) B) and C)

Exam 9: Molecular Structure of Dna and Rna

What is a component of a single nucleotide?

Correct AnswerverifiedShow Answer

What is one of the criteria that all genetic material must meet?

Correct AnswerverifiedC

The researcher(s) who initially used X-ray diffraction to gather information on the DNA molecule was ________.

Correct AnswerverifiedA

An RNA strand with sequence 5'-GUACAAUGACUUAUGUAC-3' can potentially form which structure?

Correct AnswerverifiedShow Answer

What was the conclusion of the Hershey-Chase experiments?

Correct AnswerverifiedShow Answer

The fact that the helixes of the DNA strand are arranged in opposite directions gives DNA its ________ characteristics.

Correct AnswerverifiedShow Answer

The ________ was labeled using the radioisotope 32P in the Hershey-Chase experiments.

Correct AnswerverifiedShow Answer

The pyrimidine bases are ________.

Correct AnswerverifiedShow Answer

A nucleoside consists of only a five-carbon sugar and a phosphate group.

Correct AnswerverifiedShow Answer

In the Hershey-Chase experiments, the protein coat of the bacteriophage was labeled with the 32P radioisotope.

Correct AnswerverifiedShow Answer

Cells are treated with a drug that blocks purine synthesis. Which bases would not be made in those treated cells?

Correct AnswerverifiedShow Answer

B DNA is recognized as a left-handed molecule.

Correct AnswerverifiedFalse

Which of the following is a correct matching of the researcher with their discovery?

Correct AnswerverifiedShow Answer

What were the conclusions of Franklin's work regarding the structure of DNA?

Correct AnswerverifiedShow Answer

What is the directionality of the DNA molecule?

Correct AnswerverifiedShow Answer

The fact that the type R and S strains of Streptococcus pneumoniae that Griffith worked with possessed small differences in capsule structure satisfies which of the following criteria for genetic material?

Correct AnswerverifiedShow Answer

Which base is not found in DNA?

Correct AnswerverifiedShow Answer

What is the most complex structure DNA can form?

Correct AnswerverifiedShow Answer

What is a characteristic of T2 bacteriophage?

Correct AnswerverifiedShow Answer

Avery used the enzyme ________ to remove the proteins from the cell extracts.

Correct AnswerverifiedShow Answer

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