VIROLOGY EXAMINATION QUESTIONS AND CORRECT ANSWER WITH EXPLANATION GRADED A+ STUDY GUIDE

VIROLOGY EXAMINATION QUESTIONS AND CORRECT
ANSWER WITH EXPLANATION GRADED A+ STUDY GUIDE
SOUTHERN NEW HAMPSHIRE UNIVERSITY
1. Virology is the study of:
A. Viruses and viral diseases
B. Bacteria only
C. Fungi only
D. Plants only
Answer: A
Rationale: Virology focuses on viruses and their effects on hosts.

2. A virus is best described as:
A. An acellular infectious agent
B. A living bacterium
C. A multicellular organism
D. A plant cell
Answer: A
Rationale: Viruses are not fully cellular organisms.

3. Viruses require a host cell to:
A. Replicate
B. Grow bones
C. Produce oxygen
D. Digest food
Answer: A
Rationale: Viruses cannot reproduce independently.

4. The genetic material of viruses can be:
A. DNA or RNA
B. Only DNA
C. Only proteins
D. Only lipids
Answer: A
Rationale: Viruses contain either DNA or RNA.

5. The protein coat of a virus is called the:
A. Capsid

, B. Nucleus
C. Cell wall
D. Envelope only
Answer: A
Rationale: Capsid protects viral genetic material.

6. Some viruses have an outer lipid layer called the:
A. Envelope
B. Cytoplasm
C. Ribosome
D. Cell wall
Answer: A
Rationale: Derived from host cell membranes.

7. The basic infectious unit of a virus is the:
A. Virion
B. Bacterium
C. Spore
D. Prion
Answer: A
Rationale: A complete viral particle.

8. Viral replication begins with:
A. Attachment to host cell
B. Protein synthesis only
C. Cell division only
D. Spore formation
Answer: A
Rationale: Virus binds to host receptors.

9. The process of viral entry into a host cell is called:
A. Penetration
B. Digestion
C. Photosynthesis
D. Transpiration
Answer: A
Rationale: Virus enters host cell.

10. Viral uncoating refers to:
A. Release of viral genome inside host cell

, B. Formation of antibodies
C. Cell division
D. Protein folding only
Answer: A
Rationale: Capsid is removed.

11. Viral replication of genetic material occurs during:
A. Biosynthesis phase
B. Attachment phase only
C. Release phase only
D. Dormant phase only
Answer: A
Rationale: Viral genome is copied.

12. Assembly of viruses occurs when:
A. Viral components are put together
B. Host cell dies immediately
C. DNA is destroyed
D. Antibodies are formed
Answer: A
Rationale: New virions are formed.

13. Release of viruses from host cells can occur by:
A. Lysis or budding
B. Photosynthesis
C. Diffusion only
D. Osmosis only
Answer: A
Rationale: Viruses exit host cells in two main ways.

14. Lytic cycle results in:
A. Destruction of host cell
B. Dormant infection only
C. No replication
D. Bone formation
Answer: A
Rationale: Cell bursts releasing virions.

15. Lysogenic cycle involves:
A. Integration into host genome