PART – 1 Introduction to Microbiology and Common Microorganisms
Q1. Mumps virus can primarily infect which of the following organs
A. Salivary glands
B. Limbs
C. Eyes
D. Ears
Correct Answer: (A) Salivary glands
Q2. Which type of tissue is found in the fungi
A. Parenchyma
B. Chlorenchyma
C. Plectenchyma
D. Collenchyma
Correct Answer: (C) Plectenchyma
Q3. Which drug is used in treatment for chickenpox
A. Acyclovir
B. Ondansetron
C. Pantoprazole
D. Cefexime
Correct Answer: (A) Acyclovir
Q4. The earliest recorded pandemic – the Black Death was speculated to be
A. Plague
B. Rabie
C. Leprosy
D. None of the above
Correct Answer: (A) Plague
Q5. Paul Ehrlich coined the term
A. Hydrotherapy
B. Physiotherapy
C. Chemotherapy
D. All of the above
Correct Answer: (C) Chemotherapy
Q6. Which country has released the world’s first animal vaccine against the novel coronavirus
A. China
B. Russia
C. USA
D. Israel
Correct Answer: (B) Russia
Q7. Children infected with the measles virus may die when symptoms worsen and become chronic. Name the common complication that occurs if the chronic infection develops in infants and children.
A. Kidney failure
B. Liver damage
C. Encephalitis
D. Paraplegia
Correct Answer: (C) Encephalitis
Q8. Which of the following is a reservoir for the antigenic shift variants of the influenza virus
A. Pigs and horses
B. Rodents
C. Mosquitoes
D. Human
Correct Answer: (A) Pigs and horses
Q9. Postherpetic neuralgia is a complication of
A. Shingles
B. Pneumonia
C. Acute diarrheal disease
D. None of the above
Correct Answer: (A) Shingles
Q10. Measles virus is transmitted through airborne droplets and is one of the leading causes of respiratory infections mostly seen in children of developing countries
A. More than one serotype of the virus has been identified
B. Humans are the only reservoir
C. Infection confers lifelong immunity
D. Infection can be transmitted from mother to the fetus
Correct Answer: (A) More than one serotype of the virus has been identified
Q11. Which of the following statements is correct about congenital rubella syndrome
A. Children born to unvaccinated mothers are at higher risks
B. The infected newborns usually show mild symptoms
C. Ribavirin is a very effective drug for the treatment of the infection
D. All of the above
Correct Answer: (A) Children born to unvaccinated mothers are at higher risks
Q12. The RSV virus contains genome
A. ssDNA
B. ssRNA
C. dsDNA
D. dsRNA
Correct Answer: (B) ssRNA
Q13. Which of the following age group have been found to be most affected by the parainfluenza virus
A. Teenagers
B. Babies
C. Elder people
D. School-age children
Correct Answer: (B) Babies
Q14. The characteristic shape of the bacteria is maintained because of
A. Capsule
B. Cell wall
C. Cell membrane
D. Slime layer
Correct Answer: (B) Cell wall
Q15. pH required for the growth of bacteria is
A. 6.8 – 7.2
B. 5.6 – 8.2
C. 3.0 – 6.0
D. 8.0 – 14.0
Correct Answer: (A) 6.8 – 7.2
Q16. What are the common symptoms seen in chickenpox
A. Rash
B. Fever
C. Tiredness
D. All of the above
Correct Answer: (D) All of the above
Q17. How does Ebola spread from human to human
A. Spreads through direct contact with blood and bodily fluids
B. Spreads through inhaling infected droplets
C. Spreads through contaminated water
D. None of the above
Correct Answer: (A) Spreads through direct contact with blood and bodily fluids
Q18. From which of the following the first influenza virus isolated
A. Human
B. Cat
C. Pig
D. Dog
Correct Answer: (C) Pig
Q19. Which of these is not a complication of advanced SARS
A. Muscular atrophy
B. Pneumonia
C. Heart failure
D. Liver failure
Correct Answer: (A) Muscular atrophy
Q20. A virus such as influenza which emerges suddenly and spreads globally is called
A. Epidemic
B. Endemic
C. Pandemic
D. Zoonotic
Correct Answer: (C) Pandemic
Q21. The variation of which of the following causes influenza despite vaccines available
A. Hemagglutinin
B. Hyaluronidase
C. Pepsin
D. Elastase
Correct Answer: (A) Hemagglutinin
Q22. Which of the following is seen as a potential drug for the treatment of COVID-19
A. Peramivir
B. Acyclovir
C. Remdesivir
D. Tamiflu
Correct Answer: (C) Remdesivir
Q23. Cell wall of fungi is made up of
A. Cellulose
B. Hemicellulose
C. Chitin
D. Lignin
Correct Answer: (C) Chitin
Q24. The first phase of a growth curve is
A. Log phase
B. Lag phase
C. γ phase
D. Both (a) and (b)
Correct Answer: (B) Lag phase
Q25. SARS has resulted in deaths for a majority of people in which of these age groups
A. Newborns
B. Kids between the ages of 5-10 years
C. Adults, mostly immunocompromised people
D. Elderly people
Correct Answer: (D) Elderly people
Q26. Which of the following is NOT the proper specimen for the diagnosis of SARS-CoV
A. Nasal secretions
B. Urine
C. Blood
D. Stool
Correct Answer: (B) Urine
Q27. Hospital acquired infection is also known as
A. Nasocomial infection
B. Nostocomial infection
C. Nosocongenial infection
D. Nosocomial infection
Correct Answer: (A) Nasocomial infection
Q28. Which of the following group of people have a high risk of mortality in the COVID-19 infections
A. Pregnant women
B. Kids 5-10 years old
C. Men 30-50 years old
D. All of the above
Correct Answer: (D) All of the above
Q29. Cows can digest straw because they contain
A. Cellulose hydrolyzing microorganisms
B. Protein hydrolyzing bacteria
C. Lipid hydrolyzing microorganisms
D. Amino acid degrading bacteria
Correct Answer: (A) Cellulose hydrolyzing microorganisms
Q30. The influenza virus is mainly controlled in special risk sectors by
A. Hygiene
B. Vaccination
C. Antiviral drugs
D. Humanized monoclonal antibodies
Correct Answer: (B) Vaccination
Q31. What is the main difference between a pandemic and an epidemic
A. Pandemics result in fewer deaths and infections
B. Epidemics result in more deaths and infections
C. Pandemic are international and out of control
D. Epidemics are regional and out of control
Correct Answer: (C) Pandemic are international and out of control
Q32. Chicken pox are caused due to which virus
A. Varicella zoster
B. Streptococcus
C. Both
D. None of the above
Correct Answer: (A) Varicella zoster
Q33. Rod shaped bacteria are known as
A. Cocci
B. Comma forms
C. Bacilli
D. Pleomorphic forms
Correct Answer: (C) Bacilli
Q34. Identify the influenza virus serotype that causes most of the epidemics
A. Type A
B. Type B
C. Type C
D. None of the above
Correct Answer: (A) Type A
Q35. Which of the following virus may not show flu-like symptoms in humans
A. Coronavirus
B. Rhinovirus
C. Rotavirus
D. Influenza virus
Correct Answer: (C) Rotavirus
Q36. One flagellum at one end of the organ is called
A. Monotrichate
B. Amphitrichate
C. Iophotrichate
D. Peritrichate
Correct Answer: (A) Monotrichate
Q37. Mumps is a highly contagious viral infection transmitted from person to person
A. Fever
B. Muscle aches
C. Swollen salivary glands
D. Skin rashes
Correct Answer: (D) Skin rashes
Q38. Mumps is a highly contagious viral infection transmitted from person to person
A. Fever
B. Muscle aches
C. Swollen salivary glands
D. Skin rashes
Correct Answer: (D) Skin rashes
Q39. Which of these is not a specific test for the diagnosis of SARS
A. Antibody test for SARS
B. PCR test
C. Direct isolation of SARS virus
D. Total blood count and chest x-ray
Correct Answer: (D) Total blood count and chest x-ray
Q40. Viruses which cause lysis of bacteria are known as
A. Lysogenic
B. Lytic
C. Lipolytic
D. Lysozymes
Correct Answer: (B) Lytic
Q41. How long hands to be rubbed together for effective hand washing
A. 1 minute
B. 15 seconds
C. 20 seconds
D. 45 seconds
Correct Answer: (C) 20 seconds
Q42. Study of infectious diseases causing microorganisms as well as the method of protection against them is
A. Physical Microbiology
B. Mechanical Microbiology
C. Medical Microbiology
D. Pharmaceutical Microbiology
Correct Answer: (C) Medical Microbiology
Q43. Salt and sugar preserves foods because they
A. Make them acid
B. Produce a hypotonic environment
C. Deplete nutrients
D. Produce a hypertonic environment
Correct Answer: (D) Produce a hypertonic environment
Q44. Who is considered the father of microbiology
A. Ferdinand Cohn
B. Antoni van Leeuwenhoek
C. Louis Pasteur
D. Joseph Lister
Correct Answer: (B) Antoni van Leeuwenhoek
Q45. Mode of action of penicillin is by
A. Inhibiting RNA synthesis
B. Inhibiting cell wall formation
C. Destroying chromatin
D. Inhibiting spindle formation
Correct Answer: (B) Inhibiting cell wall formation
Q46. Identify the source of H5N1 infection in humans
A. Birds
B. Pigs
C. Ferrets
D. None of the above
Correct Answer: (A) Birds
Q47. Each of the following pathogens can cause respiratory infections in humans, EXCEPT
A. Respiratory syncytial virus
B. Parainfluenza virus
C. Measles virus
D. Rabies virus
Correct Answer: (D) Rabies virus
Q48. Which of the following are NOT the common symptoms of flu caused by the influenza virus in adults
A. Fever
B. Cough
C. Rashes
D. Headache
Correct Answer: (C) Rashes
Q49. The most likely source of the MERS-CoV to humans is….
A. Dogs
B. Fishes
C. Camels
D. Birds
Correct Answer: (C) Camels
Q50. Lyme disease is transmitted to humans through
A. Touching an infected person
B. Kissing an infected person
C. Having sex with an infected person
D. None of the above
Correct Answer: (D) None of the above
Q51. How is the virus transmitted in chickenpox
A. Air borne
B. By contact
C. Both of the above
D. Through vectors
Correct Answer: (C) Both of the above
Q52. The bacterial pili mainly contain
A. Carbohydrates
B. Lipids
C. Proteins
D. Minerals
Correct Answer: (C) Proteins
Q53. What is India’s rank in the global coronavirus innovation rankings for countries
A. 32
B. 26
C. 30
D. 25
Correct Answer: (A) 32
Q54. All of the following are the common symptoms caused by the COVID-19 infection, Except
A. High fever and chills
B. Cough
C. Difficulty in breathing
D. Brown spots around the face
Correct Answer: (D) Brown spots around the face
Q55. Once exposed to the infection, in how many days a person can develop chickenpox
A. 1
B. 3
C. 5
D. 10
Correct Answer: (D) 10
Q56. Which of the following statements is true about Reverse transcriptase-polymerase chain reaction (RT-PCR)
A. Very useful for mRNA quantitation
B. Highly specific assay than serology for certain virus detection
C. Low cost and easily available
D. Helps in the identification of virus strains
Correct Answer: (C) Low cost and easily available
Q57. Which of the following viral infection is most commonly associated with the varicella virus
A. Yellow fever
B. Gangrene
C. Tuberculosis
D. Chickenpox
Correct Answer: (D) Chickenpox
Q58. Who is regarded as the father of antiseptic surgery
A. Robert Koch
B. Louis Pasture
C. Lord Joseph Lister
D. Paul Ehrlich
Correct Answer: (C) Lord Joseph Lister
Q59. Vaccines against anthrax and rabies were developed by
A. Robert Koch
B. Louis Pasture
C. Joseph Lister
D. Paul Ehrlich
Correct Answer: (B) Louis Pasture
Q60. Which of these makes SARS often difficult to diagnose
A. Mistakes in lab tests
B. Asymptomatic nature
C. Symptoms similar to common cold and flu
D. All of the above
Correct Answer: (C) Symptoms similar to common cold and flu
Q61. Which of the followings cannot be used to culture viruses
A. Tissue culture
B. Liquid medium only
C. Embryo
D. Animal host
Correct Answer: (B) Liquid medium only
Q62. Which of the following virus can give lifelong immunity to the disease after prior infection or immunization
A. Rhinovirus
B. Influenza A virus
C. Influenza C virus
D. Measles virus
Correct Answer: (D) Measles virus
Q63. Microorganisms include
A. Bacteria
B. Algae & Fungi
C. Protozoa
D. All of the above
Correct Answer: (D) All of the above
Q64. If a disease jumps from a non-human animal to a human, then it is termed as
A. Zoonotic disease
B. Infectious disease
C. Congenital disease
D. Iatrogenic disease
Correct Answer: (A) Zoonotic disease
Q65. Which of the following causes German measles
A. HIV
B. Influenza
C. Corona
D. Rubella
Correct Answer: (D) Rubella
Q66. All of the following statements about measles (Rubeola) and rubella (German measles) are true, EXCEPT
A. Humans are the only host for the rubella virus
B. Rubeola virus infection is characterized by maculopapular rashes
C. Rubella virus causes swelling of salivary glands
D. Rubella can cause serious birth defects in babies born to infected mothers
Correct Answer: (C) Rubella virus causes swelling of salivary glands
Q67. Teichoic acids and Teichuronic acids are found in
A. Gram positive bacteria
B. Gram negative bacteria
C. Fungi
D. None of the above
Correct Answer: (A) Gram positive bacteria
Q68. The differences between Gram-positive and Gram-negative bacteria is shown to reside in the
A. Cell wall
B. Nucleus
C. Cell membrane
D. Mesosomes
Correct Answer: (A) Cell wall
Q69. Which of the following microorganism is the common cause of secondary infection that can be seen with influenza virus infection
A. Rhinovirus
B. Staphylococcus aureus
C. Rubella virus
D. Chlamydia pneumoniae
Correct Answer: (B) Staphylococcus aureus
Q70. Which of the following are NOT the common symptoms of flu caused by the influenza virus in adults
A. Fever
B. Cough
C. Rashes
D. Headache
Correct Answer: (C) Rashes
Q71. How many steps are there in effective hand washing
A. 10 steps
B. 7 steps
C. 8 steps
D. 6 steps
Correct Answer: (B) 7 steps
Q72. Size of viruses range between
A. 100 mm to 150 mm
B. 30 nm to 300 nm
C. 300 nm to 3000 nm
D. 3 nm to 30 nm
Correct Answer: (B) 30 nm to 300 nm
Q73. Where will the virus reside in the body following a chickenpox infection
A. Kidney
B. Liver
C. Nerve cells
D. Lung
Correct Answer: (C) Nerve cells
Q74. What are the complications of chickenpox
A. Bacterial infection of skin
B. Reyes syndrome
C. Pneumonia
D. All of the above
Correct Answer: (D) All of the above
Q75. What is shingles
A. Reinfection by varicella zoster
B. Infection of papillomavirus
C. Infection by adenovirus
D. Infection by rhabdovirus
Correct Answer: (A) Reinfection by varicella zoster
Q76. Perinatal transmission is said to occur when a pathogen is transmitted from
A. Non-human to human
B. Infected to uninfected
C. Mother to infant
D. All of the above
Correct Answer: (C) Mother to infant
Q77. Antivirals can be must prophylactically or therapeutically in persons in which of the following circumstances
A. If administered within 4 days of clinical signs
B. If used within 48 hours of first clinical signs
C. Used for these obese
D. Used in children under the age of 2 years where high virus spread is noted
Correct Answer: (B) If used within 48 hours of first clinical signs
Q78. Father of Medical Microbiology is
A. Pasteur
B. Jenner
C. Koch
D. None of these
Correct Answer: (C) Koch
Q79. For how long does a person stay infective in chickenpox
A. 12 hours before the rash till all the rash crust
B. 24 hours before the rash till all the rash crust
C. 48 hours before the rash till all the rash crust
D. None of the above
Correct Answer: (C) 48 hours before the rash till all the rash crust
Q80. The term vaccine was given by
A. Robert Koch
B. Edward Jenner
C. Alexander Fleming
D. Louis Pasteur
Correct Answer: (B) Edward Jenner
Q81. Paramyxoviruses have all of the following properties, EXCEPT
A. Consists of a segmented genome
B. Envelope contains glycoprotein which has fusion activity
C. Has a negative RNA genome
D. Replicate in the cytoplasm
Correct Answer: (A) Consists of a segmented genome
Q82. The term ‘fungus’ was coined by
A. Gaspard Bauhin
B. De Bary
C. E.J.Butler
D. Sadasivan
Correct Answer: (A) Gaspard Bauhin
Q83. Bacterial ribosomes are composed of
A. Protein and DNA
B. Protein and mRNA
C. Protein and rRNA
D. Protein and tRNA
Correct Answer: (C) Protein and rRNA
Q84. The RSV virus belongs to the genus
A. Pneumovirus
B. Karmavirus
C. Lilyvirus
D. Macanavirus
Correct Answer: (A) Pneumovirus
Q85. The first dose of MMR vaccine and varicella vaccine (VAR) is most effective for which of the following age group of people
A. 12 years and older
B. 12 months to 10 years old
C. Newborn and 6 months old
D. 60 years and older
Correct Answer: (B) 12 months to 10 years old
Q86. Which of the following is the sudden occurrence of disease in a community
A. Outbreak
B. Pandemic
C. Syndemic
D. Synergistic
Correct Answer: (A) Outbreak
Q87. Lipid contents is more in
A. Gram negative bacteria
B. Gram positive bacteria
C. Both (a) and (b)
D. None of the above
Correct Answer: (A) Gram negative bacteria
Q88. Which of the following is a false statement regarding one of the first approved vaccines for COVID-19 by the FDA
A. The single dose of vaccine is sufficient
B. The vaccine dose has been authorized for ages 12 and older
C. Mild to moderate side effects are common
D. It is an mRNA type of a vaccine
Correct Answer: (A) The single dose of vaccine is sufficient
Q89. Which of the following statement is NOT correct about the preventive measures of the influenza virus
A. Washing hands more often helps
B. A sick person with flu should stay isolated at least for 24 hour
C. Over the counter (OTC) antiviral drugs are available for the influenza virus
D. Live attenuated and inactivated viruses both are used for vaccination
Correct Answer: (C) Over the counter (OTC) antiviral drugs are available for the influenza virus
Q90. Glucose oxidase is obtained from
A. Saccharomyces cerevisiae
B. Aspergillus niger
C. Spirulina
D. Penicillium sp
Correct Answer: (B) Aspergillus niger
Q91. Who is not eligible for vaccination by chickenpox
A. Persons with a disease that affects the immune system
B. Those who are on medication that affects the immune system
C. People suffering from cancer
D. All of the above
Correct Answer: (D) All of the above
Q92. Which of the following antibody initially responds to MV virus infection
A. IgM
B. IgA
C. IgD
D. IgE
Correct Answer: (A) IgM
Q93. According to Whitaker five kingdom classification Algae are classified under
A. Monera
B. Plantae
C. Animalia
D. Protista
Correct Answer: (D) Protista
Q94. The capacity of a given strain of microbial species to produce disease is known as
A. Pathogen
B. Virulence
C. Infection
D. None of these
Correct Answer: (B) Virulence
Q95. What are the types of hospital acquired infection
A. Ventilator associated pneumonia
B. Surgical site infection
C. Central line associated blood stream infection
D. All the above
Correct Answer: (D) All the above
Q96. What does the rash in chickenpox look like
A. Papules
B. Vesicles
C. Crusts and scabs
D. All of the above
Correct Answer: (D) All of the above
Q97. Varicella zoster is an
A. Herpes virus
B. Rhino virus
C. Both
D. None of the above
Correct Answer: (A) Herpes virus
Q98. Select all the medically important bacteria which are frequently isolated as a major pathogen of human infections
A. Pseudomonas spp
B. Staphylococcus spp
C. Mycobacterium spp
D. All of the above
Correct Answer: (D) All of the above
Q99. Which drug should be used to relieve fever in chickenpox
A. Acetaminophen
B. Nonsteroidal anti-inflammatory drugs
C. Antibiotics
D. None of the above
Correct Answer: (A) Acetaminophen
Q100. How are infectious diseases, such as colds and influenza, most commonly spread
A. Breathing viruses in air
B. Hand-to-face contact
C. Drinking infected water
D. Eating contaminated food
Correct Answer: (B) Hand-to-face contact
Q101. Which of the following person can be at risk of contracting the flu
A. A 70-year-old woman
B. A healthy 4-year-old boy
C. A 35-year-old man with diabetes
D. All of the above
Correct Answer: (D) All of the above
Q102. Which of the following CANNOT be transmitted via infectious droplets
A. Rubella
B. Common cold
C. Influenza
D. None of the above
Correct Answer: (D) None of the above
Q103. Influenza virus belongs to the family ____
A. Papoviridae
B. Orthomyxoviridae
C. Parvoviridae
D. Retroviridae
Correct Answer: (B) Orthomyxoviridae
Q104. Mycobacterium tuberculosis was first discovered by
A. Robert Koch
B. Edward Jenner
C. Louis Pasteur
D. None of the above
Correct Answer: (A) Robert Koch
Q105. The process of weakening a pathogen is called
A. Vaccination
B. Attenuation
C. Immunization
D. Virulence reduction
Correct Answer: (B) Attenuation
Q106. Vaccines are available for the prevention of infection caused by all of the following viruses, EXCEPT
A. Measles virus
B. Mumps virus
C. Human parainfluenza virus
D. Varicella-zoster virus
Correct Answer: (C) Human parainfluenza virus
Q107. Aspergillus fumigatus can infect
A. Birds
B. Animals
C. Man
D. All of the above
Correct Answer: (B) Animals
Q108. Most pandemics have arisen from influenza viruses from which of the following animals
A. Pigs
B. Wild birds
C. Bats
D. Humans
Correct Answer: (B) Wild birds
Q109. Chronic stress has been linked to which of these health problems
A. Headaches
B. Constipation
C. Depression
D. All of the above
Correct Answer: (D) All of the above
Q110. How does the WHO define pandemics, epidemics and endemics
A. Based on the number of infections
B. Based on disease’s rate of spread
C. Based on infections in a two week period
D. Based on the number of deaths due to a disease
Correct Answer: (B) Based on disease’s rate of spread
Q111. Transduction is mediated by
A. F-factors
B. Cosmids
C. Phage vectors
D. Plasmid vectors
Correct Answer: (C) Phage vectors
Q112. The ion that is required in trace amounts for the growth of bacteria is
A. Calcium
B. Magnesium
C. Cobalt
D. Sodium
Correct Answer: (C) Cobalt
Q113. Identify the False statement about the influenza viruses subtypes A, B, and C
A. Influenza type A may be found in chickens, pigs, and horses
B. Antigenic shifts or viral genome reassortment occurs in Influenza A virus
C. All three types of viruses are found in humans and other animals
D. Influenza virus infects mainly the upper respiratory tract
Correct Answer: (C) All three types of viruses are found in humans and other animals
Q114. The envelope of a virus is derived from the host’s
A. Nucleic acids
B. Membrane structures
C. Cytoplasm
D. Genome
Correct Answer: (B) Membrane structures
Q115. Which of the following influenza virus contain seven RNA segments
A. Influenza A
B. Influenza B
C. Influenza C
D. Influenza D
Correct Answer: (C) Influenza C
Q116. Microorganism have diameter usually
A. Greater than 1 mm
B. Less than 1 mm
C. Greater than 0.1 mm
D. Less than 0.1 mm
Correct Answer: (D) Less than 0.1 mm
Q117. Pasteurization is developed by
A. Robert Koch
B. Louis Pasture
C. Joseph Lister
D. Paul Ehrlich
Correct Answer: (B) Louis Pasture
Q118. Influenza B viruses infects only
A. Avian species
B. Humans
C. Horses
D. Swine
Correct Answer: (B) Humans
Q119. Alcohol is found to be the most effective disinfectant for the COVID-19 virus
A. 50% – 60%
B. Methyl
C. 60% – 70%
D. 40% – 50%
Correct Answer: (C) 60% – 70%
Q120. Which of the following is an example of the natural hosts of the Mumps virus
A. Pig
B. Bats
C. Horses
D. Humans
Correct Answer: (D) Humans
Q121. The principle of light-trapping pigment molecule in plants, Algae, and cyanobacteria is
A. Chlorophyll a
B. Chlorophyll b
C. Porphyrin
D. Rhodopsin
Correct Answer: (A) Chlorophyll a
Q122. For how long can a SARS virus survive in the open
A. 4 hours
B. 6 hours
C. 8 hours
D. 10 hours
Correct Answer: (B) 6 hours
Q123. The reinfection from respiratory syncytial virus is called
A. ART
B. URTI
C. MST
D. RTV
Correct Answer: (B) URTI
Q124. SARS is caused by the infection with which type of virus
A. Aphthovirus
B. Coronavirus
C. Helper virus
D. Borna virus
Correct Answer: (B) Coronavirus
Q125. Vaccination is only an important effective preventive method for mumps. Symptoms of the mumps usually disappear within how many days after the initial infection
A. 1 to 2 weeks
B. 1 month
C. 2 to 5 days
D. 4 to 8 weeks
Correct Answer: (A) 1 to 2 weeks