EXAM I REVIEW

Question 1

Name the 7 DNA Virus families

Answer 1

Poxviridae, Circoviridae, Herpesviridae, Asfarviridae, Parvoviridae, Papillomaviridae, Adenoviridae

Question 2

Name the 15 RNA Virus Families

Answer 2

Retroviridae, Rhabdoviridae, Picornaviridae, Paramyxoviridae, Orthomyxoviridae, Reoviridae, Coronaviridae, Togaviridae, Flaviviridae, Arteriviridae, Bunyaviridae, Caliciviridae, Birnaviridae, Bornaviridae, Astroviridae

Question 3

Studying viruses are important because…

Answer 3

1. viruses cause mortality and morbidity in animals & birds.
2. Cause tremendous financial loss to livestock & poultry industry.
3. Viruses are zoonotic

Question 4

Viruses contain…

Answer 4

Nucleic acid genome (RNA & DNA) surrounded by a protein coat. And sometimes a lipid envelope.

Question 5

Viruses do not possess…

Answer 5

Standard cellular organelles such as mitochondria, chloroplasts, Golgi, and endoplasmic reticulum with associated ribosomes.

Question 6

Bacteriophage

Answer 6

Viruses infecting bacteria

Question 7

Viruses cannot make energy or protein by themselves, why?

Answer 7

Rely on a host cell. They are obligate intracellular parasites.

Question 8

Viruses do not have the genetic capability to multiply by division, why?

Answer 8

The process of Virus reproduction resembles an assembly line in which various parts of the virus come together from different parts of the host cell to form new virus particles.

Question 9

Virion

Answer 9

complete virus particle that consists of an RNA or DNA core with a protein coat sometimes with external envelopes and that is the extracellular infective form of a virus.

Question 10

Virus

Answer 10

General terminology used to describe any aspect of the infectious agent and includes: the infectious (Virion) or inactivated virus particle, or viral nucleic acid and protein in the infected cell.

Question 11

Viroid

Answer 11

An infectious particle smaller than any of the known viruses- consists only of an extremely small circular RNA (ribonucleic acid) molecule, lacking the protein coat of a virus.

Question 12

Viroid structure

Answer 12

circular single stranded with RNA - some pairing btw complementary bases and loops of non pairing occuring

Question 13

First method used to immunize an individual against Small Pox (Variola)?

Answer 13

Variolation or Inoculation

Question 14

Symptom of Foot and Mouth disease in cows

Answer 14

Excessive salivation

Question 15

Oncogenic viruses

Answer 15

first tumor causing animal viruses ex: Rous Sarcoma virus