Unit 1: Chapter 6: Viruses and Other Acellular Infectious Agents

Question 1

Grown in bacterial cultures casuing plaque formation :

Answer 1

Bacteriophages

Question 2

Injected into live animals/embryonated eggs. Or by tissue culturesq

Answer 2

Animal viruses

Question 3

Cultured in plant tissues or whole plants. Can be introduced using abrasives

Answer 3

Plant Viruses

Question 4

Viral dilutions plated with host cells which count plaque forming units

Answer 4

Plaque Assays

Question 5

Plant pathogens

Answer 5

viroids

Question 6

This subviral agent has small, circular, single-stranded RNA

Answer 6

Viroid

Question 7

This subviral agent is non-coding, but it interferes with the host RNA processes

Answer 7

Viroids

Question 8

This subviral agent is dependent on helper viruses for replication

Answer 8

Satellite

Question 9

This satellite encodes its own capsid proteins

Answer 9

Satellite virus

Question 10

This satelllite doesn’t encode proteins

Answer 10

Satellite nucleic acid

Question 11

This subviral agent is often associated with plant viruses

Answer 11

Satellite

Question 12

This subviral agent cuases neurodegenerative diseases

Answer 12

Prion

Question 13

What are the steps of prion disease?

Answer 13

normal PrPC misfolds into PrPScPrPSC accumulatesdisease is caused

Question 14

What immediately multiplies cuasing a lytic cycle?

Answer 14

Virulent pahges

Question 15

What is a lytic cycle?

Answer 15

host cell destroyed

Question 16

What can enter lysogenic cycle?

Answer 16

temperate phage

Question 17

Which Viral infection is rapid onset, and short duration?

Answer 17

Acute

Question 18

Which Viral infection is dormant, but can reactivate?

Answer 18

latent

Question 19

Which Viral infection is a continuous viral production?

Answer 19

Chronic

Question 20

Which Viral infection converts host cells into cancerous ones?

Answer 20

Transformation

Question 21

What are the numbers in the One-Step Growth Curve of a Virus?

Answer 21

Innoculation EclipseBurstBurst Size

Question 22

What are the 5 stages of viral replicatoin?

Answer 22

attachment (Adsoprtion)entry into hostsynthesis assembly release of viral particles

Question 23

What happens during the 1st stage in viral replication?

Answer 23

Virus binds to host receptor via ligand

Question 24

What happens during the 2nd stage in viral replication?

Answer 24

Viral genome or entire nucleocapsid enters the cytoplasm

Question 25

What are the three entry methods for viruses?

Answer 25

Fusion Endocytosis Direct Nucleic Acid Release

Question 26

What happens during the 3rd stage in viral replication?

Answer 26

production of viral genetic material and proteins

Question 27

What happens during the 4th stage in viral replication?

Answer 27

complex process invovling late proteins

Question 28

What happens during the 5th stage in viral replication?

Answer 28

Naked viruses are released via lysis or exocytosis Enveloped viruses bud from host membrane

Question 29

What is a fully formed, infectious virual particle?

Answer 29

virion

Question 30

What is a nucleic acid + a protein coat?

Answer 30

Nucleocapsid

Question 31

What viruses have lipid membranes?

Answer 31

enveloped viruses

Question 32

Made of protein subunits (protomers) forming a capsomer

Answer 32

Capsid

Question 33

Protect Genetic Material and aids in genetic trasnfer between hosts

Answer 33

Capsid

Question 34

What are the shapes of viruses?

Answer 34

Helical Polyhedral Complex

Question 35

what is the flexible, membranous layer from host plasma/organelle membranes?

Answer 35

Envelope

Question 36

what is the study of viruses?

Answer 36

virology

Question 37

what are infectious agents with simple, acellular structures?

Answer 37

viruses

Question 38

What viruses can't reproduce independently and are inactive outside the host cell?

Answer 38

extracellular

Question 39

What viruses take over the host cell and direct synthesis of viral components, assmeblt and release new viruses?

Answer 39

Intracellular