Here Are 50 Multiple-Choice Questions (Mcqs) On
INFLUENZA
Based On A Typical Syllabus From USA Universities
1. What type of virus causes influenza?
a) Rhinovirus
b) Coronavirus
c) Influenza virus
d) Adenovirus
**Correct Answer: c) Influenza virus**
2. Which protein on the influenza virus surface is responsible for viral attachment
to host cells?
a) Hemagglutinin (HA)
b) Neuraminidase (NA)
c) Ribonucleoprotein (RNP)
d) Matrix protein (M)
**Correct Answer: a) Hemagglutinin (HA)**
3. Influenza viruses are classified into which types?
a) Type A, Type B, Type C
b) Type X, Type Y, Type Z
, c) Type 1, Type 2, Type 3
d) Type Alpha, Type Beta, Type Gamma
**Correct Answer: a) Type A, Type B, Type C**
4. Which type of influenza virus is known for causing severe pandemics?
a) Influenza Type A
b) Influenza Type B
c) Influenza Type C
**Correct Answer: a) Influenza Type A**
5. What is the main reservoir for influenza Type A viruses?
a) Birds
b) Pigs
c) Humans
d) Bats
**Correct Answer: a) Birds**
6. Which segment of the influenza virus genome encodes hemagglutinin (HA) and
neuraminidase (NA)?
a) Segment 1
b) Segment 4
c) Segment 6
, d) Segment 8
**Correct Answer: b) Segment 4**
7. Antigenic shift in influenza viruses is due to:
a) Gradual accumulation of mutations
b) Reassortment of gene segments
c) Gene duplication
d) Transposon activity
**Correct Answer: b) Reassortment of gene segments**
8. Which type of immunity is primarily responsible for protection against influenza
infection?
a) Innate immunity
b) Passive immunity
c) Humoral immunity
d) Cell-mediated immunity
**Correct Answer: c) Humoral immunity**
9. Which age group is considered to be at the highest risk for severe
complications from influenza?
a) Children under 2 years old
b) Adolescents
INFLUENZA
Based On A Typical Syllabus From USA Universities
1. What type of virus causes influenza?
a) Rhinovirus
b) Coronavirus
c) Influenza virus
d) Adenovirus
**Correct Answer: c) Influenza virus**
2. Which protein on the influenza virus surface is responsible for viral attachment
to host cells?
a) Hemagglutinin (HA)
b) Neuraminidase (NA)
c) Ribonucleoprotein (RNP)
d) Matrix protein (M)
**Correct Answer: a) Hemagglutinin (HA)**
3. Influenza viruses are classified into which types?
a) Type A, Type B, Type C
b) Type X, Type Y, Type Z
, c) Type 1, Type 2, Type 3
d) Type Alpha, Type Beta, Type Gamma
**Correct Answer: a) Type A, Type B, Type C**
4. Which type of influenza virus is known for causing severe pandemics?
a) Influenza Type A
b) Influenza Type B
c) Influenza Type C
**Correct Answer: a) Influenza Type A**
5. What is the main reservoir for influenza Type A viruses?
a) Birds
b) Pigs
c) Humans
d) Bats
**Correct Answer: a) Birds**
6. Which segment of the influenza virus genome encodes hemagglutinin (HA) and
neuraminidase (NA)?
a) Segment 1
b) Segment 4
c) Segment 6
, d) Segment 8
**Correct Answer: b) Segment 4**
7. Antigenic shift in influenza viruses is due to:
a) Gradual accumulation of mutations
b) Reassortment of gene segments
c) Gene duplication
d) Transposon activity
**Correct Answer: b) Reassortment of gene segments**
8. Which type of immunity is primarily responsible for protection against influenza
infection?
a) Innate immunity
b) Passive immunity
c) Humoral immunity
d) Cell-mediated immunity
**Correct Answer: c) Humoral immunity**
9. Which age group is considered to be at the highest risk for severe
complications from influenza?
a) Children under 2 years old
b) Adolescents
