Microbiology Exam 1 Review HCC Updated Final
Prep 2025/26 | Correct Answers Included | A+
Score
Characteristics of virus are? - - Obligate - obligated to infect a host cell to mulitply.
- A cellular - not cell like.
- Don't have characteristics of life.
- Inactive when outside a host cell
- Specific to host cells
What is the lysogenic phase of the viral multiplication cycle? - During lysogenic cycle
the virus do not cause lysis and death of host cell.
1. Attachment (adsorption)
2. Entry (penetration)
3. Uncoat
4. Integration
What is prophage? - A viral infection that does not cause lysis or death of the host cell
instead it remains dormant.
What are the parts of a virus? - Nucleic acid or Genome (DNA, RNA) and protein
What are capsomeres? - Sub-unit structures made of protein that form the capsid.
How are viral infections treated? - Treat the symptoms and reduce rate of
multiplication.
What are nucleocapsids? - The combination of a viral particle's nucleic acid and capsid.
What are infectious naked strands of RNA called? - Viroids - they lack protein coat.
Whare are infectious proteins particles called? - Prions - they lack nucleic acid only
have proteins
What is the correct sequence of events in viral multiplication? - Viral multiplication has
to different cycles Lytic and Lysogenic.
, Lytic cyle - results in death of host cell
1. Adsorption - Binding of virus to specific molecule on a host cell.
2. Penetration - Genome enters the cell.
3. Uncoating - The viral nucleic acid is released from the capsid.
4. Integration
5. BioSynthesis - Viral components (proteins and genome) are produced
6. Assembly - new viral particles are assembled.
7. Release - Assembled viruses are released by exocytosis or cell lysis.
Lysogenic Cycle
Viral multiplication does not cause lysis and death of the host cell.
1. Attachment
2. Entry - penetration
3. Uncoat
4. Integration
Subunits of capsids are called? - Capsomeres
How is a virus family name written? - Viruses are classified in Order, Family, Genome,
and Species only. They are classified by structure, chemical composition, and genetic makeup.
Order ends in virales (Caudovirales, Mononegavirales, Nidovirales)
Family name ends in virdae.
Genus name ends in virus.
Speices - not specified on boon
What does the core of every virus particle contain? - Nucleic acid molecules (DNA or
RNA )
What is the decolorizer in the Gram stain? - Ethyl Alcohol
Prep 2025/26 | Correct Answers Included | A+
Score
Characteristics of virus are? - - Obligate - obligated to infect a host cell to mulitply.
- A cellular - not cell like.
- Don't have characteristics of life.
- Inactive when outside a host cell
- Specific to host cells
What is the lysogenic phase of the viral multiplication cycle? - During lysogenic cycle
the virus do not cause lysis and death of host cell.
1. Attachment (adsorption)
2. Entry (penetration)
3. Uncoat
4. Integration
What is prophage? - A viral infection that does not cause lysis or death of the host cell
instead it remains dormant.
What are the parts of a virus? - Nucleic acid or Genome (DNA, RNA) and protein
What are capsomeres? - Sub-unit structures made of protein that form the capsid.
How are viral infections treated? - Treat the symptoms and reduce rate of
multiplication.
What are nucleocapsids? - The combination of a viral particle's nucleic acid and capsid.
What are infectious naked strands of RNA called? - Viroids - they lack protein coat.
Whare are infectious proteins particles called? - Prions - they lack nucleic acid only
have proteins
What is the correct sequence of events in viral multiplication? - Viral multiplication has
to different cycles Lytic and Lysogenic.
, Lytic cyle - results in death of host cell
1. Adsorption - Binding of virus to specific molecule on a host cell.
2. Penetration - Genome enters the cell.
3. Uncoating - The viral nucleic acid is released from the capsid.
4. Integration
5. BioSynthesis - Viral components (proteins and genome) are produced
6. Assembly - new viral particles are assembled.
7. Release - Assembled viruses are released by exocytosis or cell lysis.
Lysogenic Cycle
Viral multiplication does not cause lysis and death of the host cell.
1. Attachment
2. Entry - penetration
3. Uncoat
4. Integration
Subunits of capsids are called? - Capsomeres
How is a virus family name written? - Viruses are classified in Order, Family, Genome,
and Species only. They are classified by structure, chemical composition, and genetic makeup.
Order ends in virales (Caudovirales, Mononegavirales, Nidovirales)
Family name ends in virdae.
Genus name ends in virus.
Speices - not specified on boon
What does the core of every virus particle contain? - Nucleic acid molecules (DNA or
RNA )
What is the decolorizer in the Gram stain? - Ethyl Alcohol
