MICRO 5

Question 1

While on a GMeet for a class discussion, you notice one of your classmates to be unusually yellow. She was unable to finish the online class because she complained of right upper quadrant pain. Upon following her up, you learn that she had eaten chicken proven about a week ago. Considering a Hepatitis A infection, which of the following is TRUE about the disease?

A. The causative agent is a double-stranded DNA virus
B. The causative agent is of the picornaviridae family
C. The disease must have been transmitted through sexual contact
D. The causative agent has an envelope that adds to its virulence

Answer 1

B. The causative agent is of the picornaviridae family

Question 2

The genetic core of every virus particle always contains

A. DNA and RNA
B. DNA
C. either DNA or RNA
D. enzymes

Answer 2

C. either DNA or RNA

Question 3

A 10yo female is brought to you with fever, headache and rashes. The mother first noticed the rashes on the child’s face and spread outward. You think it is a rubella infection. Which of the following is TRUE about the causative agent?

A. The genome is a negative-sense RNA
B. The genome contains an RNA polymerase
C. The virus has a lipid-containing envelope
D. The genome is double stranded RNA

Answer 3

C. The virus has a lipid-containing envelope

Question 4

Which of the following does NOT pertain to virus envelopes?

A. Are formed by the virus utilizing parts of the host cell membrane
B. Contain special virus proteins
C. Are located between the capsid and nucleic acid
D. Help the virus particle attach to host cells

Answer 4

C. Are located between the capsid and nucleic acid

Question 5

When a virus is noninfectious it is termed __________.

A. dead
B. alive
C. inactive
D. active

Answer 5

C. inactive

Question 6

You happen to be in the care of a female celebrity who is admitted at the VIP suite for a genital viral infection. Which of the following is associated with cervical and genital cancer?

A. Human Herpesvirus 8
B. Langerhans cell virus
C. Papilloma virus
D. Merkel cell virus

Answer 6

C. Papilloma virus

Question 7

For “consultation purposes”, your classmate forwards to you a picture of her genital area to show you painless wartlike lesions on the area. Which of the following best describes the most likely causative agent?

A. The virus has its own RNA transcriptase
B. It is a double-stranded RNA virus
C. The virus is a causative agent of cancers
D. It is a single-stranded DNA virus

Answer 7

C. The virus is a causative agent of cancers

Question 8

Your ex suddenly messages you asking for help, knowing that you are a medical student. He/she tells you that he/she has been having a runny nose for the past 5 days. No fever, no cough. As per his/her company’s policy, an antigen and RTPCR test was done and was negative. You are quite convinced that it is not COVID. If this were merely a common cold, you know that the causative agent is NOT

A. a single-stranded DNA virus
B. in the same family as the poliovirus
C. a positive-sense, naked RNA virus
D. a single-stranded RNA virus

Answer 8

C. a positive-sense, naked RNA virus

Question 9

Viruses that consist of only a nucleocapsid are considered

A. viroids
B. naked viruses
C. incomplete viruses
D. simple viruses

Answer 9

B. naked viruses

Question 10

Which of the following is not associated with every virus?

A. Envelope
B. Genomic information
C. Capsomers
D. Capsid

Answer 10

A. Envelope

Question 11

Helical and icosahedral are terms used to describe the shapes of a virus

A. Capsomere
B. Envelope
C. Spike
D. Capsid

Answer 11

D. Capsid

Question 12

Which of the following is TRUE about the agent that causes hand-foot-and-mouth diseases?

A. It has no envelope
B. It is a negative-sense RNA virus
C. It causes gastroenteritis in children
D. It is a double stranded RNA virus

Answer 12

A. It has no envelope

Question 13

While on duty at the Rural Health Unit, a mother brings to you her 7-yo-son for check-up for fever and swelling of the right parotid area. Which of the following is NOT TRUE about the causative agent?

A. It is a member of the Togaviridae family
B. It is a negative-stranded RNA virus
C. It is an enveloped RNA virus
D. It is in the same family as the virus that causes measles

Answer 13

A. It is a member of the Togaviridae family

Question 14

A neighbor is asking for your help because she needs to go to Africa to visit her husband. You learn that her husband, a Kenyan national was admitted to the hospital due to fever and symptoms of severe hemorrhage. You are afraid it might be Ebola. What family of viruses does it belong to?

A. Filoviridae
B. Flaviviridae
C. Bunyaviridae
D. Arenaviridae

Answer 14

A. Filoviridae

Question 15

Knowing that you are a medical student, your neighbor asks for your help because his mother is having cough, fever, and difficulty of breathing. You also learn that one of the members of their household was recently admitted due to a positive RTPCR test. You are hesitant to help because you know you would be placed at risk if you help your neighbor without the proper PPE. Considering that your neighbor is infected with the virus causing the current epidemic, you know that the virus is

A. an enveloped, single-stranded RNA virus
B. an enveloped, linear DNA virus
C. an enveloped, circular DNA virus
D. a double-stranded RNA virus

Answer 15

A. an enveloped, single-stranded RNA virus

Question 16

When used in a description of viruses, the term replication includes

A. the production of multiple copies of a virus by a host cell
B. the copying of the viral DNA in a DNA virus
C. the copying of the genomic RNA in an RNA virus
D. All of these choices are correct

Answer 16

D. All of these choices are correct

Question 17

In general, most DNA viruses multiply the host cell’s _____, while most RNA viruses multiply in the host cell’s _____.

A. cytoplasm; cell membrane
B. cytoplasm; nucleus
C. nucleus; cytoplasm
D. cell membrane; cytoplasm

Answer 17

C. nucleus; cytoplasm

Question 18

Your former high school classmate asks for help via messenger because her 2-yo daughter is having loose bowel movement. Which double-stranded RNA virus is a common cause of childhood diarrhea?

A. Calicivirus
B. Gastroenterovirus
C. Rotavirus
D. Parvovirus

Answer 18

C. Rotavirus

Question 19

Classification of viruses into families involves determining the following characteristics, EXCEPT

A. type of nucleic acid
B. presence of an envelope
C. type of capsid
D. biochemical reactions

Answer 19

D. biochemical reactions

Question 20

A patient in your case presented with generalized edema and decreased urine output. He was previously operated for kidney transplant. The attending physician suggested that it may be a BK viral infection. Which of these is not true about the causative agent?

A. The virus is unique, it is brick-shaped
B. The virus has a glycoprotein-rich envelope
C. The virus has a circular genome & it is double stranded
D. It has a slow growth cycle & replicates within the nucleus

Answer 20

A. The virus is unique, it is brick-shaped

Question 21

What cubic shaped, non-enveloped polyoma virus is associated with nephropathy in transplants patients?

A. JC
B. BK
C. Merkel cells
D. MB

Answer 21

B. BK

Question 22

Which of these hepatitis causing agents is an RNA virus and requires a concomitant hepatitis B infection?

A. A
B. C
C. D
D. E

Answer 22

C. D

Question 23

Which viral hepatitis is caused by a virus whose replication involves repair of single-stranded gap in DNA, transcription in RNA, and reverse transcription of RNA to make genomic DNA?

A. A
B. B
C. C
D. D

Answer 23

B. B

Question 24

What is the double-stranded RNA virus that causes diarrhea in children?
A. Calicivirus
B. Rotavirus
C. Parvovirus
D. Gastroenterovirus

Answer 24

B. Rotavirus

Question 25

A 10 year old female is brought to you with fever, headache, and rashes. The mother first noticed the rashes on the child’s face then spread outward. You think it is a rubella infection. Which of the following is true about the infection

A. The genome is a dsRNA
B. the genome is a negative sense RNA
C. the virus has lipid containing envelope
D. The genome contain RNA polymerase

Answer 25

C. the virus has lipid containing envelope

Question 26

Which of the following diseases is caused by the flaviviridae family

A. Ebola
B. Marburg
C. Hepatitis C
D. Norwalk

Answer 26

C. Hepatitis C

Question 27

9. A mother brings her 4 yr. old daughter due to fever and rashes that started at the hairline and spread towards the face and body. After extracting her immunization history, you learned that she did not had her rubeola vaccine at 9 mos of age. Which of the following is TRUE about the causative organisms?

A. It is a segmental RNA
B. It is a double stranded RNA virus
C. It belongs to togaviridae family
D. It belongs to paramyxoviridae family

Answer 27

D. It belongs to paramyxoviridae family

Question 28

Which of the ff disease presentations is caused by dsRNA virus:

A. Oral & genital warts
B. Acute gastroenteritis of children
C. Inflammation in one or both parotid glands
D. Rashes localized around the mouth & distal extremities

Answer 28

B. Acute gastroenteritis of children

Question 29

Which polyomavirus causes skin cancer?

A. papillomavirus
B. HHV 8
C. Merkel cell virus
D. Langerhan’s cell Virus

Answer 29

C. Merkel cell virus

Question 30

Which of the herpesviridae is known to cause the sarcoma found in aids patients?

A. HIV
B. HHV
C. HSV
D. HZV

Answer 30

B. HHV

Question 31

The only DNA virus that is not icosahedral in shape

A. poxviridae
B. polymyxoviridae
C. herpesviridae
D. anelloviridae

Answer 31

A. poxviridae

Question 32

You attended to a 4 year old child in the ER who was brought in for fever and rashes. On examination, you noticed spots in the buccal mucosa consistent with measles. Which of the following is true about the disease?

A. The disease does NOT have a vaccine
B. The disease is also called Rubella infection
C. The virus is a negative-stranded RNA genome
D. The causative agent is a double stranded RNA virus

Answer 32

C. The virus is a negative-stranded RNA genome

Question 33

Which of the following is true about the virus that causes the hand foot and mouth disease?

A. No envelope
B. positive stranded RNA virus
C. double stranded RNA virus
D. causes gastroenteritis in children

Answer 33

A. No envelope
B. positive stranded RNA virus

Question 34

A 23-year old female medical student presents to you with jaundice, right upper quadrant pain, and fever. She remembered to have eaten chicken proven after their long quiz a week ago. Considering a hepatitis infection, which is true about the disease?

A. The causative agent is a member of the picornaviridae family
B. The causative agent is a double-stranded DNA virus
C. The disease must have been transmitted by blood
D. The causative agent has envelope that adds up to its virulence

Answer 34

A. The causative agent is a member of the picornaviridae family

Question 35

You noticed that your classmate arrived late for the quiz, sick-looking. You also noticed that she has vesicular lesions on her face, arms and legs. She also said that she has fever, and more lesions on her chest to her abdomen that contains fluid and itchy. What family does the causative agent of this disease belong to?

A. Poxviridae
B. Togaviridae
C. Herpesviridae
D. Paramyxoviridae

Answer 35

C. Herpesviridae

Question 36

What type of hepatitis is caused by an RNA virus that is with the same family as the virus that infects cells of CNS, damages motor neurons, and manifesting with flaccid paralysis

A. A
B. B
C. C
D. D

Answer 36

A. A

Question 37

The mother is an OFW from Kuwait and she was quarantined in Manila due to she having a fever and respiratory cough. She can’t proceed in CDO because of it. What is most likely the virus: (it’s not the exact question but only the thought)

A. A double stranded DNA virus
B. A naked ss RNA virus
C. An encapsulated RNA virus with petal shaped structure
D. RNA virus that has a reverse transcriptase

Answer 37

C. An encapsulated RNA virus with petal shaped structure

Question 38

Your neighbor asking for help to go to Africa to visit her husband. Her husband is a kenyan national and was admitted to due to fever and severe hemorrhage. You are afraid it might be Ebola. What family of viruses does it belong to?

A. Filoviridae
B. Arenaviridae
C. Bunyaviridae
D. Flaviviridae

Answer 38

A. Filoviridae

Question 39

Retroviruses have a unique viral replication. Which of the following enzymes does it possess?

A. RNA polymerase that makes new large viral polyproteins
B. Reverse transcriptase that transcribe DNA from RNA genome
C. DNA polymerase that readily transcribe DNA into mRNA for viral proteins
D. DNA polymerase that translate viral RNA to viral DNA and incorporate itself into the host

Answer 39

B. Reverse transcriptase that transcribe DNA from RNA genome

Question 40

Which of the following is a harmful abnormality resulting from a viral infection of the host?

A. Viral disease
B. Clinical disease
C. Subclinical disease
D. Inapparent disease

Answer 40

A. Viral disease