Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

BIOSCI 349 Virology > Lecture 20 > Flashcards

Lecture 20 Flashcards

1
Q

What are the classical definitions of life exhibited by viruses?

A

The ability to replicate
A nucleic acid genome
The ability to evolve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is the complete and correct definition of a virus?

A

An obligate intracellular parasite which replicates from the assembly of individual components rather than an increase in the integrated sum of these components or division

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What properties are common to all viruses?

A

A genome, A simple shape, the ability to reproduce, the ability to recognize and enter a specific subset of cells through interaction with one or more receptors on the surface of the cell

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What are the differences between the evolution of viruses and the evolution of animals?

A

There is a higher mutation rate of viral genomes compared to animals ones due to the low fidelity of an RNA dep. RNA polymerase
Selection favours viruses best adapted to spread within a population during evolution

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is the role of quasi-species in defining viruses?

A

The term species defines similar viruses but ignores heterogeneity
Quasispecies is used to refer to the different “strains” of the virus
This can be determined by monoclonal antibody recognition RT-PCR

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What are the methods for lab detection and analysis of viruses?

A

It can be done in whole animals
In organ cultures with one of the most successful methods using embryonated hens eggs
In lab grown tissue culture

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What are the features of the reo family of viruses?

A

They are double stranded RNA viruses which are icosahedral and naked

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What are the features of the Birna family of viruses?

A

Double stranded RNA viruses which are icosahedral, naked and have a segmented genome

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What are the features of the Calici family of viruses?

A

Single stranded positive sense RNA viruses with a continuous genome and a naked icosahedral capsule

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What are the features of the picorna family of viruses?

A

Single stranded positive sense RNA viruses with a continuous genome and a naked icosahedral capsule

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What are the features of the flavi family of viruses

A

Single stranded positive sense RNA viruses with a continuous genome and enveloped icosahedral capsule

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What are the features of the toga family of viruses?

A

Single stranded positive sense RNA viruses with a continuous genome and enveloped icosahedral capsule

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What are the features of the retro family of viruses?

A

Positive sense RNA viruses with two copies of its genome and an enveloped icosahedral capsule

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What are the features of the corona family of viruses?

A

A single stranded positive sense RNA virus with continuous genome and a enveloped helical capsule

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What are the features of the filo family of viruses?

A

A single stranded negative sense RNA virus with a continuous genome and an enveloped helical capsule

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What are the features of the rhabdo family of viruses?

A

A single stranded negative sense RNA virus with a continuous genome and an enveloped helical capsule

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What are the features of the bunya family of viruses?

A

A single stranded negative sense RNA virus with a 3 segmented genome and an enveloped helical capsule

18
Q

What are the features of the orthomyxo family of viruses?

A

A single stranded negative sense RNA virus with an 8 segmented genome and an enveloped helical capsule

19
Q

What are the features of the paramyxo family of viruses?

A

A single stranded negative sense RNA virus with a continuous genome and an enveloped helical capsule

20
Q

What are the features of the arena family of viruses?

A

A single stranded negative sense RNA virus with a 2 segmented genome and an enveloped helical capsule

21
Q

What are the features of the Parvo family of viruses?

A

Non-linear DNA with a naked icosahedral capsid

22
Q

What are the features of the papova family of viruses?

A

A double stranded, circular DNA virus, with a naked icosahedral capsid

23
Q

What are the features of the adeno family of viruses?

A

A double stranded, linear DNA virus with a naked icosahedral capsid

24
Q

What are the features of the hepadna family of viruses?

A

A double stranded, circle gapped DNA virus with an enveloped icosahedral capsid

25
Q

What are the features of the herpes family of viruses?

A

A double stranded linear DNA virus with an enveloped icosahedral capsid

26
Q

What are the features of the irido family of viruses?

A

A double stranded linear DNA virus with a icosahedral capsid which can be enveloped or naked

27
Q

What are the features of the baculo family of viruses?

A

A double stranded circular DNA virus with an enveloped helical capsid

28
Q

What are the features of the pox family of viruses?

A

A double stranded linear DNA virus with a coplex enveloped capsid

29
Q

How can viruses be quantified without propagation in cells?

A

Hemagglutination and quantitative serological detection

30
Q

What are the RNA family of viruses?

A

Reo, Birna, Calci, Picorna, Flavi, Toga, Retro, Corona, Filo, Rhabdo, Bunya, Orthomyxo, Paramyxo Arena

31
Q

What are the DNA viral families?

A

Parvo, Papova, Adeno, Hepadna, Herpes, Irido, Baculo, Pox

32
Q

What are the enveloped RNA viruses?

A

Flavi, Toga, Retro, Corona, Filo, Rhabdo, Bunya, Orthomyxo, Paramyxo, Arena

33
Q

What are the naked RNA viral families?

A

Reo, Birna, Calci, Picorna

34
Q

What are the enveloped DNA viral families?

A

Hepadna, Herpes, Irido, Baculo, Pox

35
Q

What are the naked DNA viral families?

A

Parvo, Papova, Adeno

36
Q

What RNA viral families use a helical capsule?

A

Corona, Filo, Rhabdo, Bunya, Orthomyxo, Paramyxo, Arena

37
Q

What RNA viral families use an icosahedral capsule?

A

Reo, Birna, Calci, Picorna, Flavi, Toga, Retro

38
Q

What are the double stranded RNA viral families?

A

Reo and Birna

39
Q

What are the single stranded positive sense RNA viral families?

A

Calci, Picorna, Flavi, Toga, Retro, Corona

40
Q

What are the single stranded negative sense RNA viral families?

A

Filo, Rhabdo, Bunya, Orthomyxo, Paramyxo Arena

BIOSCI 349 Virology (12 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions