MBIO 3401 TTU - Keyel Exam I
Questions & Answers (Grade A+)
Two kinds of plasmids?
A) Horizontally transferred plasmids
B) Vertically transferred plasmids
C) Genomes of bacteriophages
D) A & C -
correct answer ✅D) A & C Horizontal transferred plasmids, and
genomes of bacteriophages.
Plasmids ensure inheritance by?
A) High-copy-number plasmids segregate equally to daughter cell
B) Low-copy-number plasmids segregate equally to daughter cell
C) High-copy-number plasmids segregate randomly to daughter cell
D) B & C -
correct answer ✅D) B & C
Alcohol is effective against all of following but..
A) Fungus
B) Gram-positive Bacteria
C) Gram-negative Bacteria
D) Bacterial spore
,MBIO 3401 TTU - Keyel Exam I
Questions & Answers (Grade A+)
E) A & C -
correct answer ✅D) bacterial spores. - can kill fungus that is not in
a spore stage as it cannot penetrate protein rich.
Which of the following is not a similarity between most species of
Archaea and Bacteria?
A) single circular chromosome
B) DNA replication, transcription, and/or translation
C) polygenic operons
D) Lack of nuclear membrane (Nucleus)
E) All of the above are similarities -
correct answer ✅B) DNA replication, transcription, and/or
translation.
Which of the following species has a perpendicular spatial
orientation of septation?
A) Sacrcinae
B) Steptococci
C) Staphylococci
D) Tetrads
,MBIO 3401 TTU - Keyel Exam I
Questions & Answers (Grade A+)
E) A & D -
correct answer ✅E) A & D
Which of the following species has a parallel spatial orientation of
septation?
A) Tetrads
B) Staphylcocci
C) Sacrinae
D) Steptococci
E) B & D -
correct answer ✅D) Steptococci
Which of the following describes the process of importing free DNA
into bacterial cells?
A) Conjugation
B) Horizontal gene transfer
C) Transplacement
D) Transformation -
correct answer ✅D) Transformation
Which of the following is a competence factor?
, MBIO 3401 TTU - Keyel Exam I
Questions & Answers (Grade A+)
A) RNaseH
B) signal recognition particle
C) transformasome
D) DNA primase
E) None of the above -
correct answer ✅C) transformasome
Which of the following species has a random spatial orientation of
septation?
A) Tetrads
B) Staphylcocci
C) Sacrinae
D) Steptococci
E) B & D -
correct answer ✅B) Staphylococci
In what type of bacteria is the transformation process of gene
transfer is limited due to being "sequence specific".
A) Mycobacterium
B) Cyanobacterium
Questions & Answers (Grade A+)
Two kinds of plasmids?
A) Horizontally transferred plasmids
B) Vertically transferred plasmids
C) Genomes of bacteriophages
D) A & C -
correct answer ✅D) A & C Horizontal transferred plasmids, and
genomes of bacteriophages.
Plasmids ensure inheritance by?
A) High-copy-number plasmids segregate equally to daughter cell
B) Low-copy-number plasmids segregate equally to daughter cell
C) High-copy-number plasmids segregate randomly to daughter cell
D) B & C -
correct answer ✅D) B & C
Alcohol is effective against all of following but..
A) Fungus
B) Gram-positive Bacteria
C) Gram-negative Bacteria
D) Bacterial spore
,MBIO 3401 TTU - Keyel Exam I
Questions & Answers (Grade A+)
E) A & C -
correct answer ✅D) bacterial spores. - can kill fungus that is not in
a spore stage as it cannot penetrate protein rich.
Which of the following is not a similarity between most species of
Archaea and Bacteria?
A) single circular chromosome
B) DNA replication, transcription, and/or translation
C) polygenic operons
D) Lack of nuclear membrane (Nucleus)
E) All of the above are similarities -
correct answer ✅B) DNA replication, transcription, and/or
translation.
Which of the following species has a perpendicular spatial
orientation of septation?
A) Sacrcinae
B) Steptococci
C) Staphylococci
D) Tetrads
,MBIO 3401 TTU - Keyel Exam I
Questions & Answers (Grade A+)
E) A & D -
correct answer ✅E) A & D
Which of the following species has a parallel spatial orientation of
septation?
A) Tetrads
B) Staphylcocci
C) Sacrinae
D) Steptococci
E) B & D -
correct answer ✅D) Steptococci
Which of the following describes the process of importing free DNA
into bacterial cells?
A) Conjugation
B) Horizontal gene transfer
C) Transplacement
D) Transformation -
correct answer ✅D) Transformation
Which of the following is a competence factor?
, MBIO 3401 TTU - Keyel Exam I
Questions & Answers (Grade A+)
A) RNaseH
B) signal recognition particle
C) transformasome
D) DNA primase
E) None of the above -
correct answer ✅C) transformasome
Which of the following species has a random spatial orientation of
septation?
A) Tetrads
B) Staphylcocci
C) Sacrinae
D) Steptococci
E) B & D -
correct answer ✅B) Staphylococci
In what type of bacteria is the transformation process of gene
transfer is limited due to being "sequence specific".
A) Mycobacterium
B) Cyanobacterium
