Portage Learning, Microbiology Module
6 Exam 2026 Questions and Answers
virus - Correct answer-a small, non-cellular particle that cannot replicate unless
inside a living host cell
obligate intracellular parasites - Correct answer-unable to replicate on their own
2 components of a virus - Correct answer-genomic material comprised of either
DNA or RNA and a capsid
capsid - Correct answer-a membrane-like protective structure that contains the
genetic material, similar to the nucleus of a eukaryotic cell
neither - Correct answer-are viruses prokaryotic or eukaryotic?
linear arrangements - Correct answer-viral genomes can be either double or single
stranded, and may be found in circular or....
envelope - Correct answer-derived from the host cell membrane and serves as an
additional barrier to the external environment
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, naked (non-enveloped) virus - Correct answer-a virus simply surrounded by the
protein capsid
enveloped - Correct answer-the overwhelming majority of animal viruses are
__________________ whereas the majority of plant or bacteria-infecting viruses
are not
virion composition - Correct answer-differences in ________________ can also
significantly influence the shape and appearance of the virus
smallpox virus - Correct answer-an enveloped, ~ 200 nm long and has a distinct
dumbbell shaped viral capsid
poliovirus - Correct answer-non-enveloped and only ~30 nm in diameter
electron microscope - Correct answer-differences between viruses are best
visualized via an...
paramyxoviruses and orthomyxoviruses - Correct answer-both enveloped,
spherical and ~100-150 nm in diameter but vary drastically in composition and
function
paramyxoviruses - Correct answer-the causative agent of measles and mumps,
contain a single-stranded linear genome and fuses with the host cell membrane to
initiate entry and viral replication
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
6 Exam 2026 Questions and Answers
virus - Correct answer-a small, non-cellular particle that cannot replicate unless
inside a living host cell
obligate intracellular parasites - Correct answer-unable to replicate on their own
2 components of a virus - Correct answer-genomic material comprised of either
DNA or RNA and a capsid
capsid - Correct answer-a membrane-like protective structure that contains the
genetic material, similar to the nucleus of a eukaryotic cell
neither - Correct answer-are viruses prokaryotic or eukaryotic?
linear arrangements - Correct answer-viral genomes can be either double or single
stranded, and may be found in circular or....
envelope - Correct answer-derived from the host cell membrane and serves as an
additional barrier to the external environment
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
, naked (non-enveloped) virus - Correct answer-a virus simply surrounded by the
protein capsid
enveloped - Correct answer-the overwhelming majority of animal viruses are
__________________ whereas the majority of plant or bacteria-infecting viruses
are not
virion composition - Correct answer-differences in ________________ can also
significantly influence the shape and appearance of the virus
smallpox virus - Correct answer-an enveloped, ~ 200 nm long and has a distinct
dumbbell shaped viral capsid
poliovirus - Correct answer-non-enveloped and only ~30 nm in diameter
electron microscope - Correct answer-differences between viruses are best
visualized via an...
paramyxoviruses and orthomyxoviruses - Correct answer-both enveloped,
spherical and ~100-150 nm in diameter but vary drastically in composition and
function
paramyxoviruses - Correct answer-the causative agent of measles and mumps,
contain a single-stranded linear genome and fuses with the host cell membrane to
initiate entry and viral replication
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
