W3-2 Virus intro Flashcards Preview

Foundations > W3-2 Virus intro > Flashcards

Flashcards in W3-2 Virus intro Deck (14)
Loading flashcards...
1
Q

Classification system we use for viruses

A

Baltimore Classification System

2
Q

What procedure do we use to count the number of virus particles present?

A

Plaque assay procedure

3
Q

4 parts of eukaryotic viruses

A
  1. Nucleic acid
  2. Capsid
  3. Tegument (maybe)
  4. Envelope (maybe)
4
Q

Name of extracellular form of virus

A

virion

5
Q

What is a naked virus?

A

Without tegument and envelope

6
Q

What is a virus that infects bacteria called?

A

bacteriophage

7
Q

Are bacteriophages naked or enveloped viruses?

A

naked

8
Q

Crick’s two biggest mistakes

A
  1. taking credit from Franklin

2. central dogma of molecular biology

9
Q

5 steps of viral replication cycle

A
  1. Attachment
  2. Injection
  3. Protein and NA synthesis
  4. Assembly
  5. Release/lysis
10
Q

Class I example

A

Herpesvirus (dsDNA)

uses host cell’s translation mechanism

11
Q

Class IV example

A

Picrornaviruses (poliovirus)

RNA (+) sense

12
Q

Class V example

A

Orthomyxoviruses (influenza)

ssRNA (-) sense

13
Q

Lysis vs. Lysogeny

A

Lysis: releases cell contents

Lysogeny: latent period in cell (not all have this)

14
Q

Danger of viruses and antibiotic resistance

A

Viruses may confer virulence factors to bacteria