BIOD210
Bacteria & Bacteriophages
Comprehensive Test Review (Qns & Ans)
2025
1. Which of the following best describes the process of bacterial
conjugation?
- A) Transfer of genetic material through a virus
- B) Uptake of free DNA from the environment
- C) Direct transfer of genetic material between bacterial cells
through a pilus
- D) Random mutation of bacterial DNA
- ANS: C) Direct transfer of genetic material between bacterial
cells through a pilus
©/2025
, - Rationale: Bacterial conjugation involves the direct transfer
of genetic material between bacterial cells through a structure
called a pilus.
2. What is the primary role of bacteriophages in bacterial
genetics?
- A) To provide nutrients to bacteria
- B) To facilitate bacterial photosynthesis
- C) To infect and replicate within bacterial cells
- D) To aid in bacterial motility
- ANS: C) To infect and replicate within bacterial cells
- Rationale: Bacteriophages are viruses that infect and
replicate within bacterial cells, often transferring genetic material
in the process.
3. Which of the following is a method used by bacteria to
acquire new genetic material?
- A) Photosynthesis
- B) Chemotaxis
- C) Transformation
- D) Anaerobic respiration
- ANS: C) Transformation
©/2025
, - Rationale: Transformation is a process by which bacteria
acquire new genetic material by taking up free DNA from the
environment.
Fill-in-the-Blank Questions
4. The __________ cycle is a viral replication cycle in which a
bacteriophage causes the destruction of the host bacterial cell.
- ANS: Lytic
- Rationale: The lytic cycle is a viral replication cycle in
which a bacteriophage causes the destruction of the host bacterial
cell, releasing new viral particles.
5. __________ is the process by which a bacteriophage
incorporates its DNA into the host bacterial genome.
- ANS: Lysogeny
- Rationale: Lysogeny is the process by which a
bacteriophage incorporates its DNA into the host bacterial
genome, allowing the viral DNA to be replicated along with the
bacterial DNA.
6. In bacteria, __________ refers to the transfer of genetic
material mediated by a bacteriophage.
- ANS: Transduction
©/2025
Bacteria & Bacteriophages
Comprehensive Test Review (Qns & Ans)
2025
1. Which of the following best describes the process of bacterial
conjugation?
- A) Transfer of genetic material through a virus
- B) Uptake of free DNA from the environment
- C) Direct transfer of genetic material between bacterial cells
through a pilus
- D) Random mutation of bacterial DNA
- ANS: C) Direct transfer of genetic material between bacterial
cells through a pilus
©/2025
, - Rationale: Bacterial conjugation involves the direct transfer
of genetic material between bacterial cells through a structure
called a pilus.
2. What is the primary role of bacteriophages in bacterial
genetics?
- A) To provide nutrients to bacteria
- B) To facilitate bacterial photosynthesis
- C) To infect and replicate within bacterial cells
- D) To aid in bacterial motility
- ANS: C) To infect and replicate within bacterial cells
- Rationale: Bacteriophages are viruses that infect and
replicate within bacterial cells, often transferring genetic material
in the process.
3. Which of the following is a method used by bacteria to
acquire new genetic material?
- A) Photosynthesis
- B) Chemotaxis
- C) Transformation
- D) Anaerobic respiration
- ANS: C) Transformation
©/2025
, - Rationale: Transformation is a process by which bacteria
acquire new genetic material by taking up free DNA from the
environment.
Fill-in-the-Blank Questions
4. The __________ cycle is a viral replication cycle in which a
bacteriophage causes the destruction of the host bacterial cell.
- ANS: Lytic
- Rationale: The lytic cycle is a viral replication cycle in
which a bacteriophage causes the destruction of the host bacterial
cell, releasing new viral particles.
5. __________ is the process by which a bacteriophage
incorporates its DNA into the host bacterial genome.
- ANS: Lysogeny
- Rationale: Lysogeny is the process by which a
bacteriophage incorporates its DNA into the host bacterial
genome, allowing the viral DNA to be replicated along with the
bacterial DNA.
6. In bacteria, __________ refers to the transfer of genetic
material mediated by a bacteriophage.
- ANS: Transduction
©/2025
