Ch. 14 - Viruses

Question 1

Parvoviridae

Answer 1

Strand type: single DNA

Capsid symmetry: icosahedral

Virion: naked

Question 2

Herpesviridae

Answer 2

Strand type: double DNA

Capsid symmetry: icosahedral

Virion: envelope

Question 3

Hepadnaviridae

Answer 3

Strand type: double DNA (RNA intermediate)

Capsid symmetry: icosahedral

Virion: naked

Question 4

Coronaviridae

Answer 4

Strand type: single (+) RNA

capsid symmetry: helical

Virion: envelope

Question 5

Orthomyxoviridae

Answer 5

Strand type: single (-) RNA

capsid symmetry: helical

Virion: envelope

Question 6

Retroviridae

Answer 6

Strand type: Single (+) RNA, with DNA intermediate

Capsid symmetry: icosahedral

Virion: envelope

Question 7

Human Papilloma Virus (HPV) - Papovaviridae

Answer 7

DNA tumor virus (ds DNA)

Benign disease: warts, genital worts

Associated cancer: cervical, penile, oropharyngeal

Question 8

Epstein-Barr (EBV) - Herpesviridae

Answer 8

DNA tumor virus (ds DNA)

Benign disease: infectious mononucleosis

Associated cancer: Burkitt Lymphoma (cancer of jaw), Hodgkin Lymphoma

Question 9

Herpesvirus 8 (HV8) - Herpesviridae

Answer 9

DNA tumor virus (ds DNA)

Benign disease: growth in lymph nodes

Associated cancer: Kaposi’s sarcoma

Question 10

Hepatitis B virus (HBV) - Hepadnaviridae

Answer 10

DNA tumor virus (ds DNA)

Benign disease: Hepatitis B

Associated cancer : liver cancer

Question 11

Hepatitis C virus (HCV) - Flaviviridae

Answer 11

RNA tumor virus (retrovirus - ds DNA inserted into host genome ad provirus)

Benign disease: hepatitis C

Associated cancer: liver cancer