Question 1

Which DNA virus family is responsible for causing smallpox in humans, and what is a key factor that enabled its eradication?

Accepted Answer

Poxviridae; lack of asymptomatic cases

Question 2

A patient presents with smooth, waxy papules on the face and trunk. Which virus is most likely responsible, and what population is most at risk?

Accepted Answer

Molluscipoxvirus; children and sexually active individuals

Question 3

Which of the following best describes the genome of Hepatitis B virus (HBV)?

Accepted Answer

Both single-stranded and double-stranded DNA

Question 4

What is the primary mode of transmission for Human Herpesvirus 4 (Epstein-Barr Virus)?

Accepted Answer

Saliva

Question 5

Which stage of poxvirus lesion is characterized by the presence of pus?

Accepted Answer

Pustule

Question 6

A child develops a pink rash on the face, neck, trunk, and thighs. Which virus is most likely responsible, and what is the name of the disease?

Accepted Answer

HHV-6; roseola

Question 7

Which virus is associated with the formation of 'owl's eye' cells in infected tissues?

Accepted Answer

HHV-5 (Cytomegalovirus)

Question 8

Which of the following is a major reason why smallpox was eradicated?

Accepted Answer

There were no animal reservoirs

Question 9

A patient with a compromised immune system develops progressive multifocal leukoencephalopathy. Which virus is most likely responsible?

Accepted Answer

JC virus (Polyomaviridae)

Question 10

Which virus is the only human pathogen with a single-stranded DNA genome?

Accepted Answer

Parvovirus B19

Question 11

Genital warts are associated with an increased risk of which type of cancer?

Accepted Answer

Cervical cancer

Question 12

Which virus is most commonly transmitted via respiratory droplets and is a causative agent of the common cold?

Accepted Answer

Adenovirus

Question 13

A patient presents with jaundice, liver enlargement, and abdominal distress. Which virus is most likely responsible, and what is a unique feature of its replication?

Accepted Answer

Hepatitis B virus; replication through an RNA intermediary

Question 14

Which of the following equations best represents the relationship between viral load ($$V$$), immune response ($$I$$), and disease severity ($$S) in $$cytomegalovirus infection?

Accepted Answer

$$S = \frac{V}{I}$$

Question 15

Which virus is associated with the development of Kaposi’s sarcoma in immunocompromised patients?

Accepted Answer

HHV-8 (Rhadinovirus)

Question 16

Which of the following best explains why chickenpox is more severe in adults than in children?

Accepted Answer

Adults have a stronger immune response, leading to more severe symptoms

Question 17

Which virus is most likely to cause mild diarrhea and conjunctivitis (pinkeye) in addition to respiratory symptoms?

Accepted Answer

Adenovirus

Question 18

Which of the following is a plausible reason why health care workers should wear gloves when dealing with herpesvirus infections?

Accepted Answer

To prevent transmission through skin contact with lesions

Question 19

Which virus is most likely to cause erythema infectiosum (fifth disease) characterized by a reddening of the skin aggravated by sunlight?

Accepted Answer

Parvovirus B19

Question 20

Which of the following equations best represents the decrease in hepatitis B cases after the introduction of the vaccine, as shown in the graph?

Accepted Answer

$$C(t) = C_0$ e$$^{-kt}$$

Study Notes: Chapter 24

Study Guide - Practice Questions

Study Guide - Flashcards