Brainscape's Knowledge GenomeTM

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


See full index

Phase I Medicine > Micro-organisms: Viruses > Flashcards

Micro-organisms: Viruses Flashcards

1
Q

What does it mean for a virus to be ‘obligate’?

A

An organism that fails to reproduce without exploiting a suitable host.

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

What is important about viral components during replication?

A

They must be able to self assemble.

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

What is a nucleocapsid?

A

Protein cage that helps form the viral particle genome contained within a protein capsule

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

What is a virion?

A

The infective viral particle.

For non-enveloped viruses this is the nucleocapsid; for enveloped viruses, this is the nucleocapsid and the envelope.

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

What does ‘H’ stand for with regard to viral naming?

A

Hemagglutinin receptor recognition on host cell

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

What are the characteristics of norovirus?

A

Non-enveloped (naked)

Self-limiting

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

What is important to note about naked viruses in comparison to enveloped ones?

A

They are much more stable in the face of environmental stress (e.g. gut, poor water treatment) than enveloped viruses.
Spread more easily

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

What is important to note about enveloped viruses in comparison to naked ones?

A

Must stay wet to remain infectious

Can spread via budding rather than cell lysis

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

How are different viruses grouped?

A 
Single stranded
Double stranded
DNA
RNA
DNA and RNA
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What are retroviruses?

A

Single stranded RNA viruses

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

What are hepadnaviruses?

A

Double stranded DNA viruses

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

What classes of proteins do the viral genomes code for?

A

Proteins for the future viral particles
Enzymes for genome replication
Proteins to interfere with host response

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

What is the site of viral entry into a host cell?

A

Site formed by the receptor and co-receptor

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

What are examples of -strand RNA viruses?

A 
Influenza
Mumps
Measles
Rabies
Ebola
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What are examples of double stranded RNA viruses?

A

Rotavirus

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

What are examples of + strand RNA viruses?

A

Poliovirus
Dengue
Hepatitis C

17
Q

What are examples of DNA viruses?

A

Adenovirus
Herpes
Ebstein-Barr

18
Q

How can a virus turn a host cell into a cancer cell?

A

Viral oncogene introduction

Insertion of viral DNA into host genome -> activation of host cell oncogenes

19
Q

Why are viral infections prevalent?

A 
High mutagenic rates
Error prone polymerases
Recombination of viruses
Re-emerging infectious diseases
Latent/ persistent infections are prevalent

Phase I Medicine (46 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions