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Introduction To Fungi - Hepatitis > Introduction To Virus > Flashcards

Introduction To Virus Flashcards

1
Q

Any of various simple submicroscopic obligate parasites of plants, animals, and
bacteria?

A

Virus

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2
Q

They are classified as functionally
_____ or _______.

A

active, inactive

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3
Q

Virus consists of its _____ or essentially of a core of _____, surrounded by a protein coat called _____?

A

Genome, RNA or DNA, caspid

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4
Q

Is the viral genome (viral DNA or RNA) + protein coat (capsid)?

A

Nucleocapsid

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5
Q

It can posses an outer membrane covering the capsid?

A

Enveloped virus

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6
Q

can be non-enveloped viruses?

A

Naked Viruses

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7
Q

Virus family has the suffix _____?

A

-viridae

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8
Q

The protein shell or coat surrounding the viral genome (viral RNA or DNA)?

A

Caspid

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9
Q

3 types of caspid symmetry?

A

Icosahedral
Helical
Complex

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10
Q

The capsid proteins are arranged in equilateral triangles that
enclose the viral genome?

A

Icosahedral

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11
Q

The capsid proteins are arranged around the core in a spiral
manner?

A

Helical

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12
Q

Virus cannot reproduce on their own. They must invade a cell, take over the cell’s
machinery and instruct the machinery to produce enzymes and new viral structural
protein.

A

Viral Replication

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13
Q

6 steps of viral replication?

A
  1. Absorption
  2. Penetration
  3. Uncoating
  4. Synthesis of viral nucleic acid and structural protein
  5. Assembly/maturation
  6. Release
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14
Q

The first step in infection of a cell is attachment to the cell surface. This is a very
specific process in which the viral surface structure interact to a particular
receptor the cell surface of the host cell.

A

Absorption

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15
Q

The virus enters the cell either by: Fusing with the plasma membrane, Endocytosis, or Fusing with the plasma membrane and injecting its genome to the host cell?

A

Penetration

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16
Q

A virus that infects bacteria?

A

Bacteriophage

17
Q

The viral genome is released from the capsid into the cytoplasm or directly into
the nucleus?

A

Uncoating

18
Q

New virus particles (virions) are assembled?

A

Assembly/maturation

19
Q

Other term for cell rapture?

A

Cell Lysis

20
Q

The virion will tear off a piece of the host’s cell membrane as it exits which
will become the envelope of the newly formed virus?

A

Bud form

21
Q

The last step of virus reproduction where it can undergo either through cell lysis or bud form?

A

Release

22
Q

The Two modes of Viral Replication:

A
  1. Lytic cycle
  2. Lysogenic cycle
23
Q

The virus enters the cell, replicates itself hundreds of times using
the host cell machinery, and then bursts out of the cell, destroying it.?

A

Lytic cycle

24
Q

Virus genome that attaches itself to the host DNA and,
replicates when the host cell divides?

A

Lysogenic cycle

25
Q

Causes no harm to the
host cell, an induction event, such as exposure to ultraviolet light, can cause this latent
stage to enter the lytic cycle?

A

Lysogenic cycle

26
Q

Is based on the nucleotides in the virus, its mode of replication, the structure
and symmetry of the structural proteins (capsids) and the presence or absence of an envelope?

A

Viral Replication

27
Q

Two types of DNA virus?

A
  1. Double-stranded DNA
  2. Single stranded DNA
28
Q

Two types of RNA virus?

A
  1. RNA sense
  2. RNA antisense
29
Q

Viruses include poxviruses, herpesviruses, adenoviruses,
papovaviruses and polyomaviruses?

A

Double-stranded DNA

30
Q

viruses include parvoviruses.
DNA viruses usually replicate in the nucleus of host cells by producing a polymerase that
reproduces viral DNA. Viral DNA is not usually incorporated into host chromosomal DNA?

A

Single-stranded DNA

31
Q

May serve directly as mRNA and be translated into structural
protein and an RNA-dependent RNA polymerase.

A

RNA sense

32
Q

Contains an RNA-dependent RNA polymerase that transcribes
the viral genome into mRNA. Alternatively, the transcribed RNA can act as a template for
further viral (antisense) RNA.

A

RNA antisense

Introduction To Fungi - Hepatitis (8 decks)

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