Family Retroviridae

Question 1

Which of the following characteristics describes the Family Retroviridae?

A) Non-enveloped with a helical nucleocapsid and double-stranded RNA
B) Enveloped, with coiled nucleocapsid, icosahedral with single-stranded RNA
C) Enveloped, with a polyhedral nucleocapsid and double-stranded DNA
D) Non-enveloped with a complex capsid and single-stranded DNA

Answer 1

B) Enveloped, with coiled nucleocapsid, icosahedral with single-stranded RNA

Question 2

Which enzyme found in the Retroviridae family is responsible for converting the virus’s RNA into DNA, making it difficult for antiviral agents to act on the virus?

Choices:
A) Restriction enzyme
B) DNA polymerase
C) Ligase
D) Reverse transcriptase

Answer 2

D) Reverse transcriptase

Question 3

Where does the Family Retroviridae primarily replicate?

A) Inside the cytoplasm
B) Inside the mitochondria
C) Inside the endoplasmic reticulum
D) Inside the nucleus

Answer 3

D) Inside the nucleus

Question 4

What serves as the primary point of entry for the virus of the Family Retroviridae into the cell?

A) CD8+
B) CD3+
C) CD4+
D) CD20+

Answer 4

C) CD4+

Question 5

Which cell type shows a marked preference for infection by Family Retroviridae?

A) B cells
B) Natural killer cells
C) T-helper/inducer lymphocytes (CD4+)
D) Macrophages

Answer 5

C) T-helper/inducer lymphocytes (CD4+)

Question 6

Which subfamilies belong to the Family Retroviridae?

A) Lentivirus and Oncovirus
B) Adenovirus and Herpesvirus
C) Orthomyxovirus and Paramyxovirus
D) Papillomavirus and Polyomavirus

Answer 6

A) Lentivirus and Oncovirus