(Virus Classification) 2025/2026 Exam
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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
- 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
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, genome - 🧠 ANSWER ✔✔genetic material of the virus, either DNA or RNA (can
be double or single stranded)
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)
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
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STATEMENT. ALL RIGHTS RESERVED