Question 1

Which of the following best explains why viruses are considered obligate intracellular parasites?

Accepted Answer

Viruses require host cells to replicate because they lack the necessary enzymes and organelles.

Question 2

A patient presents with fever, muscle aches, and cough. Which symptom would most likely indicate progression from a common cold to influenza?

Accepted Answer

Pneumonia

Question 3

Which equation best represents the incubation period ($$T_{inc}) $$for a virus, given that $$T_{inc} is $$inversely proportional to the rate of viral replication ($$r$$)?

Accepted Answer

$$T_{inc} = \frac{1}{r}$$

Question 4

Which of the following statements about COVID-19 is correct?

Accepted Answer

COVID-19 can cause pneumonia and is transmitted via respiratory droplets.

Question 5

A public health official is advising residents of a rural region affected by frequent floods to get vaccinated against a type of hepatitis that is commonly transmitted by ingesting contaminated water. Which hepatitis is most likely the concern in this scenario?

Accepted Answer

HAV

Question 6

Which of the following best describes the major concern with Zika virus during pregnancy?

Accepted Answer

Microcephaly and other birth defects.

Question 7

Which of the following statements is true regarding the transmission of hepatitis B and C?

Accepted Answer

Both are mainly transmitted through sexual contact and bodily fluids.

Question 8

Which of the following is NOT a recommended treatment for viral infections such as the common cold?

Accepted Answer

Antibiotics

Question 9

A patient is diagnosed with hepatitis C. Which of the following is a likely long-term complication?

Accepted Answer

Liver failure

Question 10

Which of the following viruses is most commonly associated with mosquito transmission and can cause encephalitis?

Accepted Answer

West Nile virus

Question 11

Which of the following statements about SARS-CoV-2 is correct?

Accepted Answer

SARS-CoV-2 is transmitted primarily through respiratory droplets in the air.

Question 12

Which of the following is a key difference between the common cold and influenza in adults?

Accepted Answer

The flu can lead to complications such as pneumonia, while the common cold does not.

Question 13

Which of the following is the leading cause of death from liver disease?

Accepted Answer

HCV (Hepatitis C Virus)

Question 14

Which of the following best describes the transmission route for hepatitis A?

Accepted Answer

Fecal-oral route, often through contaminated food or water

Question 15

Which of the following is a recommended prevention strategy for West Nile virus?

Accepted Answer

Use of mosquito repellent and avoiding mosquito-infested areas

Question 16

Which of the following statements is true regarding the use of antibiotics for viral infections?

Accepted Answer

Antibiotics are not effective against viral infections.

Question 17

A patient is exposed to Zika virus in a region with high mosquito activity. Which of the following symptoms would most likely indicate Zika infection?

Accepted Answer

Fever, joint & muscle pain, skin rash

Question 18

Which of the following is a complication associated with hepatitis B infection?

Accepted Answer

Liver cancer

Question 19

Which of the following is a correct statement about the availability of vaccines for hepatitis viruses?

Accepted Answer

Vaccines are available for hepatitis A and B, but not for hepatitis C.

Question 20

A patient is diagnosed with influenza. Which of the following is a recommended treatment?

Accepted Answer

Antiviral medications

Protecting Against Infectious Diseases: Viruses and Viral Infections

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