Question 1

RNA molecules differ from DNA molecules because only RNA

Accepted Answer

A) Has ribose 
B) Has uracil 
C) Is typically one strand of nucleotides 
D) Does not have thymine 
E) All of the choices are correct 
A) Has ribose 
B) Has uracil 
C) Is typically one strand of nucleotides 
D) Does not have thymine 
E) All of the choices are correct

Question 2

Bacterial conjugation involves

Accepted Answer

A) Bacteriophage carrying donor DNA to the recipient cell 
B) A donor cell with a plasmid that synthesizes a pilus 
C) Naked DNA fragments from a lysed donor cell are taken up by a recipient cell 
D) New progeny cells with genes from two parent bacterial cells 
E) None of the choices are correct 
A) Bacteriophage carrying donor DNA to the recipient cell 
B) A donor cell with a plasmid that synthesizes a pilus 
C) Naked DNA fragments from a lysed donor cell are taken up by a recipient cell 
D) New progeny cells with genes from two parent bacterial cells 
E) None of the choices are correct

Question 3

All of the following pertain to nitrogenous bases except

Accepted Answer

A) Form pairs by hydrogen bonding 
B) Guanine pairs with uracil 
C) Adenine pairs with thymine 
D) Cytosine and thymine are pyrimidines 
E) Allows variation from one nucleotide to another which creates the encoded information 
A) Form pairs by hydrogen bonding 
B) Guanine pairs with uracil 
C) Adenine pairs with thymine 
D) Cytosine and thymine are pyrimidines 
E) Allows variation from one nucleotide to another which creates the encoded information

Question 4

Among the microorganisms, various genomes can include

Accepted Answer

A) Chromosomes 
B) Plasmids 
C) Mitochondrial DNA 
D) Chloroplast DNA 
E) All of the choices are correct 
A) Chromosomes 
B) Plasmids 
C) Mitochondrial DNA 
D) Chloroplast DNA 
E) All of the choices are correct

Question 5

The process in which mutations are removed and the correct bases added is called

Accepted Answer

A) Transduction 
B) Excision repair 
C) Frameshift 
D) Back-mutation 
E) Transformation 
A) Transduction 
B) Excision repair 
C) Frameshift 
D) Back-mutation 
E) Transformation

Question 6

All of the following pertain to transcription except

Accepted Answer

A) Occurs on a ribosome in the cytoplasm 
B) Occurs before translation 
C) Requires RNA polymerase 
D) Requires a template DNA strand 
E) Is a process of protein synthesis 
A) Occurs on a ribosome in the cytoplasm 
B) Occurs before translation 
C) Requires RNA polymerase 
D) Requires a template DNA strand 
E) Is a process of protein synthesis

Question 7

Transcription occurs in the nucleus or at the nucleoid.

Accepted Answer

A) True 
 B)False

Question 8

The DNA of microorganisms is made up of subunits called

Accepted Answer

A) Histones 
B) Amino acids 
C) Nucleotides 
D) mRNA 
E) Polymerases 
A) Histones 
B) Amino acids 
C) Nucleotides 
D) mRNA 
E) Polymerases

Question 9

Semiconservative replication refers to

Accepted Answer

A) Each base bonding at the 1' position of the sugar 
B) A purine always bonding to a pyrimidine 
C) One helix strand that runs from the 5' to 3' direction and the other strand runs from the 3' to 5' direction 
D) An original parent DNA strand and one newly synthesized DNA strand comprising a new DNA molecule 
E) None of the choices are correct 
A) Each base bonding at the 1' position of the sugar 
B) A purine always bonding to a pyrimidine 
C) One helix strand that runs from the 5' to 3' direction and the other strand runs from the 3' to 5' direction 
D) An original parent DNA strand and one newly synthesized DNA strand comprising a new DNA molecule 
E) None of the choices are correct

Question 10

If the wild type DNA sequence reads THE CAT ATE THE BIG RAT, what type of mutation would change the sequence to THE CAT ATA ETH EBI GRA T?

Accepted Answer

A) Missense 
B) Nonsense 
C) Insertion 
D) Deletion 
E) Silent 
A) Missense 
B) Nonsense 
C) Insertion 
D) Deletion 
E) Silent

Question 11

Each nucleotide is composed of

Accepted Answer

A) One phosphate, one nitrogenous base, one sugar 
B) One phosphate, one nitrogenous base, two sugars 
C) Two phosphates, one nitrogenous base, one sugar 
D) Two phosphates, one nitrogenous base, two sugars 
E) One phosphate, two nitrogenous bases, one sugar 
A) One phosphate, one nitrogenous base, one sugar 
B) One phosphate, one nitrogenous base, two sugars 
C) Two phosphates, one nitrogenous base, one sugar 
D) Two phosphates, one nitrogenous base, two sugars 
E) One phosphate, two nitrogenous bases, one sugar

Question 12

The transfer of DNA fragments from a dead cell to a live, competent recipient cell that results in a changed recipient cell is

Accepted Answer

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

Question 13

A mutation that changes a normal codon to a stop codon is called a

Accepted Answer

A) Point mutation 
B) Silent mutation 
C) Back mutation 
D) Missense mutation 
E) Nonsense mutation 
A) Point mutation 
B) Silent mutation 
C) Back mutation 
D) Missense mutation 
E) Nonsense mutation

Question 14

The _____ is all of the genetic material of a cell.

Accepted Answer

A) Chromosome 
B) Plasmid 
C) Prophage 
D) Genome 
E) Proteome 
A) Chromosome 
B) Plasmid 
C) Prophage 
D) Genome 
E) Proteome

Question 15

Gene regulation can involve a protein repressor that blocks _____ from initiating transcription.

Accepted Answer

A) DNA polymerase I 
B) DNA polymerase III 
C) RNA polymerase 
D) mRNA 
E) rRNA 
A) DNA polymerase I 
B) DNA polymerase III 
C) RNA polymerase 
D) mRNA 
E) rRNA

Question 16

Synthesis of an inducible enzyme requires

Accepted Answer

A) Repressor alone bound to operator 
B) Substrate bound to repressor 
C) Substrate bound to promoter 
D) Co repressor and repressor binding to operator 
E) None of the choices are correct 
A) Repressor alone bound to operator 
B) Substrate bound to repressor 
C) Substrate bound to promoter 
D) Co repressor and repressor binding to operator 
E) None of the choices are correct

Question 17

Which is incorrect about purines?

Accepted Answer

A) Only found in DNA, not in RNA 
B) Are nitrogenous bases 
C) Always paired with a specific pyrimidine 
D) Include adenine and guanine 
E) Found within nucleotides 
A) Only found in DNA, not in RNA 
B) Are nitrogenous bases 
C) Always paired with a specific pyrimidine 
D) Include adenine and guanine 
E) Found within nucleotides

Question 18

The antiparallel arrangement within DNA molecules refers to

Accepted Answer

A) Each base bonding at the 1' position of the sugar 
B) A purine always bonding to a pyrimidine 
C) One helix strand that runs from the 5' to 3' direction and the other strand runs from the 3' to 5' direction 
D) An original parent DNA strand and one newly synthesized DNA strand comprising a new DNA molecule 
E) None of the choices are correct 
A) Each base bonding at the 1' position of the sugar 
B) A purine always bonding to a pyrimidine 
C) One helix strand that runs from the 5' to 3' direction and the other strand runs from the 3' to 5' direction 
D) An original parent DNA strand and one newly synthesized DNA strand comprising a new DNA molecule 
E) None of the choices are correct

Question 19

Hfr transfer involves all of the following except

Accepted Answer

A) Gene integration into the bacterial chromosome 
B) Plasmid gene transfer 
C) F factor is part of the F+ donor chromosome 
D) High frequency transfer 
E) A pilus connection between F+ and F- cells 
A) Gene integration into the bacterial chromosome 
B) Plasmid gene transfer 
C) F factor is part of the F+ donor chromosome 
D) High frequency transfer 
E) A pilus connection between F+ and F- cells

Question 20

A screening system called the _____ test is used for detecting chemicals with carcinogenic potential.

Accepted Answer

A) Koch 
B) Ames 
C) Mutation 
D) Cancer 
E) Iowa 
A) Koch 
B) Ames 
C) Mutation 
D) Cancer 
E) Iowa

Exam 9: An Introduction to Microbial Genetics

RNA molecules differ from DNA molecules because only RNA

Bacterial conjugation involves

All of the following pertain to nitrogenous bases except

Among the microorganisms, various genomes can include

The process in which mutations are removed and the correct bases added is called

All of the following pertain to transcription except

Transcription occurs in the nucleus or at the nucleoid.

The DNA of microorganisms is made up of subunits called

Semiconservative replication refers to

If the wild type DNA sequence reads THE CAT ATE THE BIG RAT, what type of mutation would change the sequence to THE CAT ATA ETH EBI GRA T?

Each nucleotide is composed of

The transfer of DNA fragments from a dead cell to a live, competent recipient cell that results in a changed recipient cell is

A mutation that changes a normal codon to a stop codon is called a

The _____ is all of the genetic material of a cell.

Gene regulation can involve a protein repressor that blocks _____ from initiating transcription.

Synthesis of an inducible enzyme requires

Which is incorrect about purines?

The antiparallel arrangement within DNA molecules refers to

Hfr transfer involves all of the following except

A screening system called the _____ test is used for detecting chemicals with carcinogenic potential.

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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