Question 1

Okazaki fragments are attached to the growing end of the lagging strand by

Accepted Answer

A) DNA ligase 
B) DNA polymerase 
C) DNA helicase 
D) DNA gyrase 
E) Primase 
A) DNA ligase 
B) DNA polymerase 
C) DNA helicase 
D) DNA gyrase 
E) Primase

Question 2

The duplication of a cell's DNA is called

Accepted Answer

A) Mitosis 
B) Replication 
C) Transcription 
D) Translation 
E) Mutation 
A) Mitosis 
B) Replication 
C) Transcription 
D) Translation 
E) Mutation

Question 3

DNA replication proceeds in one direction around the bacterial chromosome.

Accepted Answer

A) True 
 B)False

Question 4

Introns have no detectable functions.

Accepted Answer

A) True 
 B)False

Question 5

The nontranscribed region of DNA to which RNA polymerase binds to nitiate transcription is called the

Accepted Answer

A) Promoter 
B) Operator 
C) Operon 
D) Exon 
E) Intron 
A) Promoter 
B) Operator 
C) Operon 
D) Exon 
E) Intron

Question 6

The three-base sequence on DNA that codes for an amino acid is called a(n)

Accepted Answer

A) Codon 
B) Exon 
C) Anticodon 
D) Intron 
E) Triplet 
A) Codon 
B) Exon 
C) Anticodon 
D) Intron 
E) Triplet

Question 7

The jumping of a gene from one location to another is done by

Accepted Answer

A) Conjugation 
B) Transposons 
C) Transformation 
D) Transduction 
E) Transmission 
A) Conjugation 
B) Transposons 
C) Transformation 
D) Transduction 
E) Transmission

Question 8

Split genes

Accepted Answer

A) Are common in prokaryotes and eukaryotes 
B) Only have exons initially transcribed to mRNA 
C) Have introns located only at the beginning and end of a coding region 
D) Use spliceosomes to excise introns and then join exons 
E) All of the choices are correct 
A) Are common in prokaryotes and eukaryotes 
B) Only have exons initially transcribed to mRNA 
C) Have introns located only at the beginning and end of a coding region 
D) Use spliceosomes to excise introns and then join exons 
E) All of the choices are correct

Question 9

RNA polymerase binds to the

Accepted Answer

A) Start codon 
B) Termination sequence 
C) Regulation sequence 
D) Promoter sequence 
E) None of the choices are correct 
A) Start codon 
B) Termination sequence 
C) Regulation sequence 
D) Promoter sequence 
E) None of the choices are correct

Question 10

Structural genes code for

Accepted Answer

A) Ribosomal RNA molecules 
B) Transfer RNA molecules 
C) Cellular proteins 
D) Gene expression elements 
E) All of the choices are correct 
A) Ribosomal RNA molecules 
B) Transfer RNA molecules 
C) Cellular proteins 
D) Gene expression elements 
E) All of the choices are correct

Question 11

Which of the following is incorrect about transfer RNA?

Accepted Answer

A) Has a bottom hairpin loop with an anticodon 
B) An anticodon is complementary to a codon 
C) Contains a binding site for an amino acid 
D) The initiator tRNA that binds to the P site has the anticodon UAC 
E) Initiator tRNA in bacteria carries tryptophan 
A) Has a bottom hairpin loop with an anticodon 
B) An anticodon is complementary to a codon 
C) Contains a binding site for an amino acid 
D) The initiator tRNA that binds to the P site has the anticodon UAC 
E) Initiator tRNA in bacteria carries tryptophan

Question 12

Which of the following is not true of conjugation?

Accepted Answer

A) Involves direct contact between cells 
B) Transfers genes for drug resistance 
C) Transfers genes for enzymes and adherence molecules 
D) Transfers genes for a polysaccharide capsule 
E) The donor retains a copy of the transferred genes 
A) Involves direct contact between cells 
B) Transfers genes for drug resistance 
C) Transfers genes for enzymes and adherence molecules 
D) Transfers genes for a polysaccharide capsule 
E) The donor retains a copy of the transferred genes

Question 13

This molecule is synthesized as a copy of a gene on the DNA template strand

Accepted Answer

A) Ribosomal RNA 
B) Messenger RNA 
C) Transfer RNA 
D) Primer RNA 
E) Ribozymes 
A) Ribosomal RNA 
B) Messenger RNA 
C) Transfer RNA 
D) Primer RNA 
E) Ribozymes

Question 14

The enzyme that helps pack DNA into the cell by coiling the DNA into a tight bundle is:

Accepted Answer

A) DNA ligase 
B) DNA polymerase 
C) DNA helicase 
D) DNA gyrase 
E) Primase 
A) DNA ligase 
B) DNA polymerase 
C) DNA helicase 
D) DNA gyrase 
E) Primase

Question 15

The smallest unit of heredity is a chromosome.

Accepted Answer

A) True 
 B)False

Question 16

A nucleosome is a linear chromosome wound around the

Accepted Answer

A) Nuclear membrane 
B) rRNA 
C) mRNA 
D) Histone 
E) Nucleolus 
A) Nuclear membrane 
B) rRNA 
C) mRNA 
D) Histone 
E) Nucleolus

Question 17

Which of the following is incorrect about termination codons?

Accepted Answer

A) Are also called nonsense codons 
B) Where the bond between the final tRNA and the growing polypeptide is broken 
C) Include AUG 
D) Include UAA, UAG, UGA 
E) Do not have corresponding tRNA 
A) Are also called nonsense codons 
B) Where the bond between the final tRNA and the growing polypeptide is broken 
C) Include AUG 
D) Include UAA, UAG, UGA 
E) Do not have corresponding tRNA

Question 18

In Griffith's experiments with Streptococcus pneumoniae, rough non-encapsulated Streptococci were converted into smooth encapsulated Streptococci in the presence of the heat- killed smooth encapsulated Streptococci.What is the term that describes this process?

Accepted Answer

A) transduction 
B) conjugation 
C) transformation 
D) cloning 
A) transduction 
B) conjugation 
C) transformation 
D) cloning

Question 19

Replication of DNA begins at a(n)

Accepted Answer

A) Guanine-cytosine rich area 
B) Uracil-adenine rich area 
C) Adenine-thymine rich area 
D) Adenine-cytosine rich area 
E) Guanine-adenine rich area 
A) Guanine-cytosine rich area 
B) Uracil-adenine rich area 
C) Adenine-thymine rich area 
D) Adenine-cytosine rich area 
E) Guanine-adenine rich area

Question 20

Eukaryotic chromosomes differ from prokaryotic chromosomes because only eukaryotes have

Accepted Answer

A) Histone proteins 
B) Chromosomes in a nucleus 
C) Several to many chromosomes 
D) Elongated, not circular, chromosomes 
E) All of the choices are correct 
A) Histone proteins 
B) Chromosomes in a nucleus 
C) Several to many chromosomes 
D) Elongated, not circular, chromosomes 
E) All of the choices are correct

Exam 9: An Introduction to Microbial Genetics

Okazaki fragments are attached to the growing end of the lagging strand by

The duplication of a cell's DNA is called

DNA replication proceeds in one direction around the bacterial chromosome.

Introns have no detectable functions.

The nontranscribed region of DNA to which RNA polymerase binds to nitiate transcription is called the

The three-base sequence on DNA that codes for an amino acid is called a(n)

The jumping of a gene from one location to another is done by

Split genes

RNA polymerase binds to the

Structural genes code for

Which of the following is incorrect about transfer RNA?

Which of the following is not true of conjugation?

This molecule is synthesized as a copy of a gene on the DNA template strand

The enzyme that helps pack DNA into the cell by coiling the DNA into a tight bundle is:

The smallest unit of heredity is a chromosome.

A nucleosome is a linear chromosome wound around the

Which of the following is incorrect about termination codons?

In Griffith's experiments with Streptococcus pneumoniae, rough non-encapsulated Streptococci were converted into smooth encapsulated Streptococci in the presence of the heat- killed smooth encapsulated Streptococci.What is the term that describes this process?

Replication of DNA begins at a(n)

Eukaryotic chromosomes differ from prokaryotic chromosomes because only eukaryotes have

The Main Themes of Microbiology

The Chemistry of Biology

Tools of the Laboratory: Methods of Studying Microorganisms

A Survey of Prokaryotic Cells and Microorganisms

A Survey of Eukaryotic Cells and Microorganisms

An Introduction to Viruses

Microbial Nutrition, Ecology, and Growth

An Introduction to Microbial Metabolism: the Chemical Crossroads of Life

Genetic Engineering: a Revolution in Molecular Biology

Physical and Chemical Agents for Microbial Control

Drugs, Microbes, Host-The Elements of Chemotherapy

Microbe-Human Interactions: Infection, Disease, and Epidemiology

An Introduction to Host Defenses and Innate Immunities

Adaptive, Specific Immunity and Immunization

Disorders in Immunity

Procedures for Identifying Pathogens and Diagnosing Infections

The Gram-Positive and Gram-Negative Cocci of Medical Importance

The Gram-Positive Bacilli of Medical Importance

The Gram-Negative Bacilli of Medical Importance

Miscellaneous Bacterial Agents of Disease

The Fungi of Medical Importance

The Parasites of Medical Importance

Introduction to Viruses That Infect Humans: the Dna Viruses

The Rna Viruses That Infect Humans

Environmental Microbiology

Applied and Industrial Microbiology

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