Characteristics To Viral Replication Flashcards Preview

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Flashcards in Characteristics To Viral Replication Deck (32):
1

It is the protein coat of virus

Capsid

2

Genome and protein coat

Nucleocapsid

3

Entire virus particle

Virion

4

Enveloped virus are susceptible to inactivation by....

High temp
Extreme pH
Chemicals

5

Non enveloped virus are also known as

Naked virus

6

Of host origin and contain virus encoded proteins

Envelope

7

3 types of virion morphology

Helical
Icosahedral
Complex

8

Masks the shape of the virion

Envelope

9

A geometric shape with 20 triangular sides

Icosahedral

10

Largest virus

Poxvirus

11

Smallest human virus

Poliovirus

12

Virus are classified according to

Genome
Number of strands in genome
Morphology
Presence and absence of envelope

13

Term which means they must be inside a living cell to use the host cell machinery to replicate

Obligate intracellular parasite

14

Stages of viral replication

Absorption
Penetration
Uncoating
Eclipse stage
Assembly
Release

15

Stage that is specific for cell receptors

Absorption

16

________ ____________ determine entry point into the host

Receptor distribution

17

Most cell receptors are

Glycoproteins

18

Receptor for influenza

Sialic acid

19

Receptor for rabies virus

Acetylcholine

20

Receptor for poliovirus

Immune globulins superfamily

21

Receptor for HIV

CD4

22

Receptor for EBV

Complement receptor C3d

23

These are specialized structures on the surface of a susceptible cell

Adhesion molecules

24

Stage that is virus dependent

Penetration

25

Viruses that are able to penetrate the naked directly

Naked viruses

26

Virus that enters the cell by fusion with the cell membrane

Enveloped virus

27

Third method of penetration is

Endocytosis

28

Metabolism of the host cell may be completely stopped or may continue on a restricted scale. Give 1 ex of virus that does this

Poliovirus = completely stop
Influenza virus = restricted scale

29

Capsid proteins subunit aggregate to form

Capsomers

30

Capsomers combine to form

Capsid

31

How does naked viruses releases their new virion

Through lysis

32

How does enveloped viruses releases their new virion

Budding