Question 1

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)  Chargaff 
A)  Franklin 
B)  Watson and Crick 
C)  Hershey and Chase 
D)  Pauling 
E)  Chargaff A

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. 
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. C

Question 3

B DNA is recognized as a left-handed molecule.

Accepted Answer

A) True 
 B)False  False

Question 4

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. 
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.

Question 5

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-soluble 
A)  antiparallel 
B)  complementary 
C)  redundant 
D)  water-soluble

Question 6

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. 
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.

Question 7

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)  Variation 
A)  Transmission 
B)  Replication 
C)  Information 
D)  Variation

Question 8

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

Accepted Answer

A)  RNA 
B)  DNA 
C)  protein 
D)  carbohydrates 
A)  RNA 
B)  DNA 
C)  protein 
D)  carbohydrates

Question 9

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

Question 10

Which base is not found in DNA?

Accepted Answer

A)  Cytosine 
B)  Guanine 
C)  Thymidine 
D)  Adenine 
E)  Uracil 
A)  Cytosine 
B)  Guanine 
C)  Thymidine 
D)  Adenine 
E)  Uracil

Question 11

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

Accepted Answer

A) True 
 B)False

Question 12

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

Question 13

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 correct 
A)  protease 
B)  DNase 
C)  RNase 
D)  All of the answers are correct

Question 14

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

Accepted Answer

A) True 
 B)False

Question 15

The pyrimidine bases are ________.

Accepted Answer

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

Question 16

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

Question 17

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. 
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.

Question 18

What is a component of a single nucleotide?

Accepted Answer

A)  A phosphate group 
B)  A six carbon sugar 
C)  All five nitrogenous bases 
A)  A phosphate group 
B)  A six carbon sugar 
C)  All five nitrogenous bases

Question 19

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

Question 20

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. 
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.

Exam 9: Molecular Structure of Dna and Rna

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

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

B DNA is recognized as a left-handed molecule.

What was the conclusion of the Hershey-Chase experiments?

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

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

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?

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

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

Which base is not found in DNA?

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

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

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

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

The pyrimidine bases are ________.

What is the directionality of the DNA molecule?

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

What is a component of a single nucleotide?

What is the most complex structure DNA can form?

What is a characteristic of T2 bacteriophage?

Overview of Genetics

Mendelian Inheritance

Chromosome Transmission During Cell Division and Sexual Reproduction

Extensions of Mendelian Inheritance

Non-Mendelian Inheritance

Genetic Linkage and Mapping in Eukaryotes

Genetic Transfer and Mapping in Bacteria

Variation in Chromosome Structure and Number

Chromosome Organization and Molecular Structure

Dna Replication

Gene Transcription and Rna Modification

Translation of Mrna

Gene Regulation in Bacteria

Gene Regulation in Eukaryotes I: Transcriptional and Translation Regulation

Gene Regulation in Eukaryotes Ii: Epigenetics

Non-Coding Rnas

Genetics of Viruses

Gene Mutation and Dna Repair

Recombination, Immunogenetics, and Transposition

Molecular Technologies

Biotechnology

Genomics I: Analysis of Dna

Genomics Ii: Functional Genomics, Proteomics, and Bioinformatics

Medical Genetics and Cancer

Developmental Genetics

Population Genetics

Complex and Quantitative Traits

Evolutionary Genetics

Filters