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MICROB 3200 (Baldwin) - Final Exam (Virus
Classification) Questions with Answers (100% Correct
Answers)
viruses Answer: - highly adaptive chemical entities that replicate
- must invade living cells in order to reproduce
- when they invade, the cells are damaged or destroyed in the process
releasing new particles to infect other cells
are viruses able to generate energy or produce proteins independent
of a host cell? Answer: NO
do viruses multiply by division? Answer: - no, do not have to genetic
capability to divide
- genome replication entirely dependent on host
Does the viral genome contain DNA or RNA? Answer: contain one or
the other --> NEVER BOTH
2 group types of viruses Answer: - naked capside
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- envelope w/ attached proteins
**does not tell us about what virus does/infects
smallest pathogen w/in the human species? Answer: viruses
**typically not observable under a microscoe
how can you visually identify a virus? Answer: - electron microscope
(not easy)
- almost always looking at a dead sample prepared from the individual
virion Answer: The infectious particle consisting of the envelope (some
viruses), capsid and the interior core (genome +/- accessory viral
proteins)
**transmissable particle
capsid Answer: The outer protein shell that protects the interior core
containing the genome and other proteins
**all viruses make this
genome Answer: genetic material of the virus, either DNA or RNA (can
be double or single stranded)
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nucleocapsid Answer: Capsid + genome
**can be the same as virion (subset of virion)
cellular components of virion Answer: - lipid envelope
- protein capsid
- virion associated polymerase
- spike projections
- nucleic acid
core of virion Answer: nucleic acid (DNA, RNA) and viral produced
protein associated protein w/ genome
action of protein capsid in virioin Answer: forms shell around nucleic
acid and associated proteins
envelope of virion derived from? Answer: host cell membranes (usually
golgi apparatus or ER)
spike projections of virion membrane + action Answer: - proteins
inserted into membrane of envelope, mediate attacks on target cells for
entry of virus
© 2025 All rights reserved
MICROB 3200 (Baldwin) - Final Exam (Virus
Classification) Questions with Answers (100% Correct
Answers)
viruses Answer: - highly adaptive chemical entities that replicate
- must invade living cells in order to reproduce
- when they invade, the cells are damaged or destroyed in the process
releasing new particles to infect other cells
are viruses able to generate energy or produce proteins independent
of a host cell? Answer: NO
do viruses multiply by division? Answer: - no, do not have to genetic
capability to divide
- genome replication entirely dependent on host
Does the viral genome contain DNA or RNA? Answer: contain one or
the other --> NEVER BOTH
2 group types of viruses Answer: - naked capside
© 2025 All rights reserved
,2
- envelope w/ attached proteins
**does not tell us about what virus does/infects
smallest pathogen w/in the human species? Answer: viruses
**typically not observable under a microscoe
how can you visually identify a virus? Answer: - electron microscope
(not easy)
- almost always looking at a dead sample prepared from the individual
virion Answer: The infectious particle consisting of the envelope (some
viruses), capsid and the interior core (genome +/- accessory viral
proteins)
**transmissable particle
capsid Answer: The outer protein shell that protects the interior core
containing the genome and other proteins
**all viruses make this
genome Answer: genetic material of the virus, either DNA or RNA (can
be double or single stranded)
© 2025 All rights reserved
, 3
nucleocapsid Answer: Capsid + genome
**can be the same as virion (subset of virion)
cellular components of virion Answer: - lipid envelope
- protein capsid
- virion associated polymerase
- spike projections
- nucleic acid
core of virion Answer: nucleic acid (DNA, RNA) and viral produced
protein associated protein w/ genome
action of protein capsid in virioin Answer: forms shell around nucleic
acid and associated proteins
envelope of virion derived from? Answer: host cell membranes (usually
golgi apparatus or ER)
spike projections of virion membrane + action Answer: - proteins
inserted into membrane of envelope, mediate attacks on target cells for
entry of virus
© 2025 All rights reserved
