Virology

Question 1

Intracellular organisms unable to reproduce itself outside the host cell

Answer 1

virus

Question 2

All viruses are haploid except for

Answer 2

RETROVIRUS

Question 3

Virus multiplies by binary fission

True or False

Answer 3

False

Question 4

entire infectious unit of virus

Answer 4

virion

Question 5

internal core of virus

Answer 5

genome

Question 6

protein coat that surrounds the genome

Answer 6

capsid

Question 7

Subunits of capsid are called

Answer 7

CAPSOMERES

Question 8

Type of capsomeres

Answer 8

icosahedral
helical
complex

Question 9

Virus without envelope are classified as

Answer 9

NAKED

Question 10

Viruses are resistant to

Answer 10

antimicrobial

antibacterial

Question 11

Viruses can survive long periods at

Answer 11

-70degC when freeze dried

Question 12

Viruses can be killed with ____ but are somewhat resistant to _____

Answer 12

moist heat

dry heat

Question 13

These inactivates viruses

Answer 13

UV and XRAY irradiation

Question 14

Inactivate viruses that have lipid envelope

Answer 14

Chloroform

Ether

Question 15

Protein shell or coat that encloses the nucleic acid genome that is built
of structural units of a virion

Answer 15

Capsid

Question 16

DNA (deoxyribonucleic acid) or RNA (ribonucleus acid)

Answer 16

Nucleic Acid

Question 17

Nucleic acid + Capsid (Enclosed)

Answer 17

Nucleocapsid

Question 18

Morphological units seen on the surface of particles and represent
clusters of structure units or polypeptide

Answer 18

Capsomeres

Question 19

A lipid containing membrane that surrounds some viral particles.

Answer 19

Envelope

Question 20

A lipid containing membrane that surrounds some viral particles.

Answer 20

Envelope

Question 21

It is acquired during viral maturation by a budding process through a cell membrane

Answer 21

Envelope

Question 22

Envelope viruses has a ______ appearance inside the envelope

Answer 22

pleomorphic

Question 23

the smallest functional unit equivalent to building units of the capsid. Basic protein that acts as building blocks of the coat

Answer 23

Structural units- Protomers

Question 24

Lysis is required for __________ and not for ___________

Answer 24

icosahedral pattern

helical pattern

Question 25

the most efficient arrangement for subunits in a closed shell

Answer 25

Cubic symmetry

Question 26

observed with animal viruses is the

Answer 26

icosahedral pattern

Question 27

protein subunits are bound in a periodic way to the viral nucleic acid, winding into a helix

Answer 27

Helical symmetry

Question 28

mostly used to distinguish different types of RNA viruses

Answer 28

Baltimore Classification/Scheme

Question 29

is a proteinaceous infectious material

Answer 29

PRION

Question 30

PRION's structure is composed of

Answer 30

insoluble beta pleated sheet

Question 31

PRION affects

Answer 31

NS such as fibrils and vacuole (spongy)

Question 32

Normal cellular protein misfolded when a portion of its α-helical coil structure refolds to a β-sheet, producing a mutant protein May be secreted in the urine

Answer 32

Transmissible spongiform encephalopathies (TSE)

Question 33

Animal infection: Scrapie

Answer 33

sheep

Question 34

Animal infection: Chronic wasting disease

Answer 34

Mule, deer, and elk

Question 35

Animal infection: Transmissible mink encephalopathy

Answer 35

Mink

Question 36

a family of progressive neurodegenerative disorders that affect both humans and animals

Answer 36

Human infection- Prion diseases

Question 37

Types of prions

Answer 37

Sporadic Genetic Variant Iatrogenic

Question 38

What animal affects Bovine spongiform encephalopathy (BSE)

Answer 38

Cattle

Question 39

Viral genomes contain information which:

Answer 39

ensures replication packaging alters structure

Question 40

All are double stranded-DNA except

Answer 40

parvovirus

Question 41

All are icosahedral DNA, except

Answer 41

Poxvirus(COMPLEX)

Question 42

All are enveloped, Except

Answer 42

Papovavirus Adenovirus Parvovirus

Question 43

All multiply in nucleus, Except

Answer 43

Poxvirus (cytoplasm)

Question 44

Largest DNA virus

Answer 44

poxvirus

Question 45

smallest DNA virus

Answer 45

Parvovirus