MCQS VARIANTS FINAL MICROBIOLOGY

Pfeiffer stain is a complex method of staining

a/ yes

b/ no

Pfeiffer stain is a complex method of staining

a/ yes

Bacteria are not prokaryotic microorganisms.

a/ yes

b/ no

Bacteria are not prokaryotic microorganisms.

b/ no

Ethanol acts best as an antiseptic at 70 %

a/ yes

b/ no

Ethanol acts best as an antiseptic at 70 %

a/ yes

Plasmids mediate antibiotic resistance.

a/ yes

b/ no

Plasmids mediate antibiotic resistance.

a/ yes

Human serа are used for immune-prophylaxis

a/ yes

b/ no

Human serа are used for immune-prophylaxis

a/ yes

Scarlet fever is caused by Staphylococcus aureus

a/ yes

b/ no

Scarlet fever is caused by Staphylococcus aureus

b/ no

Hepatitis B is responsible for Acquired immunodeficiency syndrome

a/ yes

b/ no

Hepatitis B is responsible for Acquired immunodeficiency syndrome

b/ no

Antonie van Leeuwenhoek is best known for his pioneering work in microscopy

a/ yes

b/ no

Antonie van Leeuwenhoek is best known for his pioneering work in microscopy

a/ yes

Round-shaped bacteria arranged in chains are known as staphylococci

a/ yes

b/ no

Round-shaped bacteria arranged in chains are known as staphylococci

b/ no

Legionnaires disease is caused by a viral pathogen

a/ yes

b/ no

Legionnaires disease is caused by a viral pathogen

b/ no

The primary immune response is characterized by the production of IgG

a/ true

b/ false

The primary immune response is characterized by the production of IgG

b/ false

The doubling time of M. tuberculosis is 24 minutes

a/ true

b/ false

The doubling time of M. tuberculosis is 24 minutes

b/ false

Capsular forms of bacteria are avirulent

a/ true

b/ false

Capsular forms of bacteria are avirulent

b/ false

Rotaviruses have air-borne transmission

a/ true

b/ false

Rotaviruses have air-borne transmission

a/ true

Smallpox is caused by the variola virus.

a/ true

b/ false

Smallpox is caused by the variola virus.

a/ true

Exotoxins have a specific effect on certain organs and tissues

a/ true

b/ false

Exotoxins have a specific effect on certain organs and tissues

a/ true

Beta-lactamases can break down the molecule of penicillin.

a/ true

b/ false

Beta-lactamases can break down the molecule of penicillin.

a/ true

C. striatum is considered as commensal in humans.

a/ true

b/ false

C. striatum is considered as commensal in humans.

a/ true

M. tuberculosis is a facultative anaerobic bacterium.

a/ true

b/ false

M. tuberculosis is a facultative anaerobic bacterium.

b/ false

Bacterial name is defined by genus and species name.

a/ true

b/ false

Bacterial name is defined by genus and species name.

a/ true

SARS-CoV-2 is:

a/ single-stranded DNA virus

b/ single-stranded RNA virus

c/ double-stranded DNA virus

d/ double-stranded RNA virus

SARS-CoV-2 is:

a/ single-stranded DNA virus

b/ single-stranded RNA virus

c/ double-stranded DNA virus

d/ double-stranded RNA virus

The most common clinical type of anthrax infection is

a/ inhalational

b/ injection

c/ cutaneous

d/ septic

The most common clinical type of anthrax infection is

a/ inhalational

b/ injection

c/ cutaneous

d/ septic

Macrolide antibiotics act by inhibiting:

a/ 30 S ribosomal subunit

b/ 50 S ribosomal subunit

c/ DNA gyrase

d/ cell wall synthesis

Macrolide antibiotics act by inhibiting:

a/ 30 S ribosomal subunit

b/ 50 S ribosomal subunit

c/ DNA gyrase

d/ cell wall synthesis

What are the vectors of yellow fever:

a/ fleas

b/ flies

c/ ticks

d/ mosquitoes

What are the vectors of yellow fever:

a/ fleas

b/ flies

c/ ticks

d/ mosquitoes

The rapid bacterial growth phase is known as:

a/ log

b/ lag

c/ lac

d/ none

The rapid bacterial growth phase is known as:

a/ log

b/ lag

c/ lac

d/ none

Antimicrobial drugs can be classified according to:

a/ the spectrum of their activity

b/ the producer

c/ the mechanism of action

d/ all of the above

Antimicrobial drugs can be classified according to:

a/ the spectrum of their activity

b/ the producer

c/ the mechanism of action

d/ all of the above

Fungi can be classified according to their morphology as:

a/ dimorphic

b/ molds

c/ yeast

d/ all of the above

Fungi can be classified according to their morphology as:

a/ dimorphic

b/ molds

c/ yeast

d/ all of the above

Volutine inclusions are seen in:

a/ Bacillus spp.

b/ Vibrio spp.

c/ Clostridium spp.

d/ Corynebacterium spp.

Volutine inclusions are seen in:

a/ Bacillus spp.

b/ Vibrio spp.

c/ Clostridium spp.

d/ Corynebacterium spp.

Bacterial size is measured in:

a/ micrometers

b/ centimeters

c/ nanometers

d/ millimeters

Bacterial size is measured in:

a/ micrometers

b/ centimeters

c/ nanometers

d/ millimeters

Serological reactions are useful for:

a/ detection of antigens

b/ detection of antibodies

c/ both a/ and b/

d/ none of this

Serological reactions are useful for:

a/ detection of antigens

b/ detection of antibodies

c/ both a/ and b/

d/ none of this

T-cells matures in:

a/ bone marrow

b/ thymus

c/ spleen

d/ all the of above

T-cells matures in:

a/ bone marrow

b/ thymus

c/ spleen

d/ all the of above

Type I hypersensitivity reactions are mediated by:

a/ IgM

b/ IgE

c/ IgA

d/ IgD

Type I hypersensitivity reactions are mediated by:

a/ IgM

b/ IgE

c/ IgA

d/ IgD

Reservoir of the plague are:

a/ rats

b/ fleas

c/ humans

d/ foxes

Reservoir of the plague are:

a/ rats

b/ fleas

c/ humans

d/ foxes

Which of the following diseases and bacteria are matched up incorrectly:

a/ Cellulitis – Brucella spp.

b/ Tularemia – Francisella tularensis

c/ Gastritis – Heliobacter pylori

d/ Lyme disease – Borrelia spp.

Which of the following diseases and bacteria are matched up incorrectly:

a/ Cellulitis – Brucella spp.

b/ Tularemia – Francisella tularensis

c/ Gastritis – Heliobacter pylori

d/ Lyme disease – Borrelia spp.

The causative agent of pseudomembranous colitis is:

a/ A. baumannii

b/ Y. entrocolitica

c/ C. difficile

d/ E. coli (some serotypes)

The causative agent of pseudomembranous colitis is:

a/ A. baumannii

b/ Y. entrocolitica

c/ C. difficile

d/ E. coli (some serotypes)

The process of reducing the virulence of microbes so that they can be used in vaccines is called:

a/ inactivation

b/ attenuation

c/ recombination

d/ lyophilization

The process of reducing the virulence of microbes so that they can be used in vaccines is called:

a/ inactivation

b/ attenuation

c/ recombination

d/ lyophilization

All of the following are beta-lactam antibiotic, except:

a/ aztreonam

b/ cephalosporins

c/ rifamycins

d/ carbapenems

All of the following are beta-lactam antibiotic, except:

a/ aztreonam

b/ cephalosporins

c/ rifamycins

d/ carbapenems

According to their function pili could be:

a/ adhesive

b/ conjugative (sex pili)

c/ both a/ and b/

d/ neither

According to their function pili could be:

a/ adhesive

b/ conjugative (sex pili)

c/ both a/ and b/

d/ neither

Lipid content is higher in:

a/ Gram-negative

b/ Gram-positive

c/ similar for Gram-positive and Gram-negative

d/ neither

Lipid content is higher in:

a/ Gram-negative

b/ Gram-positive

c/ similar for Gram-positive and Gram-negative

d/ neither

Live vaccines are used for any of the following diseases, except:

a/ mumps

b/ tuberculosis

c/ flu

d/ measles

Live vaccines are used for any of the following diseases, except:

a/ mumps

b/ tuberculosis

c/ flu

d/ measles

Which of the following are not Gram-positive bacteria: (2pt)

a/ S. flexneri

b/ S. pneumoniae

c/ S. aureus

d/ S. enterica

e/ S. pyogenes

f/ S. mutans

Which of the following are not Gram-positive bacteria: (2pt)

a/ S. flexneri

b/ S. pneumoniae

c/ S. aureus

d/ S. enterica

e/ S. pyogenes

f/ S. mutans

Which of the following microorganisms has not been linked to urinary tract infections: (2pt)

a/ E. coli

b/ C. perfringens

c/ Klebsiella spp.

d/ Proteus spp.

e/ P. aeruginosa

f/ H. influenzae

Which of the following microorganisms has not been linked to urinary tract infections: (2pt)

a/ E. coli

b/ C. perfringens

c/ Klebsiella spp.

d/ Proteus spp.

e/ P. aeruginosa

f/ H. influenzae

Which of the following microorganisms stain on Gram: (2pt)

a/ M. genitalium

b/ L. pneumophilla

c/ E. coli

d/ U. urealyticum

e/ C. trachomatis

f/ L. monocytogenes

Which of the following microorganisms stain on Gram: (2pt)

a/ M. genitalium

b/ L. pneumophilla

c/ E. coli

d/ U. urealyticum

e/ C. trachomatis

f/ L. monocytogenes

Diphtheria toxin does not act on the: (2pt)

a/ small intestine

b/ brain

c/ kidneys

d/ heart

e/ liver

f/ peripheral nerves

Diphtheria toxin does not act on the: (2pt)

a/ small intestine

b/ brain

c/ kidneys

d/ heart

e/ liver

f/ peripheral nerves

N. gonorrhoeae is primarily associated with any of the following diseases, except: (2pt)

a/ bacteriemia

b/ pelvic inflammatory disease

c/ urethritis

d/ pneumonia

e/ conjunctivitis in newborns

f/ salpingitis

N. gonorrhoeae is primarily associated with any of the following diseases, except: (2pt)

a/ bacteriemia

b/ pelvic inflammatory disease

c/ urethritis

d/ pneumonia

e/ conjunctivitis in newborns

f/ salpingitis

Which of the following antibiotics inhibit the 50 S ribosomal subunit: (2pt)

a/ glycopeptides

b/ rifamycins

c/ aminoglycosides

d/ tetracyclines

e/ macrolides

f/ amphenicols

Which of the following antibiotics inhibit the 50 S ribosomal subunit: (2pt)

a/ glycopeptides

b/ rifamycins

c/ aminoglycosides

d/ tetracyclines

e/ macrolides

f/ amphenicols

Which of the following are DNA viruses: (2pt)

a/ polioviruses

b/ coronaviruses

c/ echovirus

d/ adenoviruses

e/ herpesviruses

f/ influenza viruses

Which of the following are DNA viruses: (2pt)

a/ polioviruses

b/ coronaviruses

c/ echovirus

d/ adenoviruses

e/ herpesviruses

f/ influenza viruses

All of the following Gram (-) bacteria produce exotoxins, except: (2pt)

a/ E. coli

b/ B. pertussis

c/ V. cholerae

d/ S. dysenteriae

e/ K. pneumoniae

f/ A. baumannii

All of the following Gram (-) bacteria produce exotoxins, except: (2pt)

a/ E. coli

b/ B. pertussis

c/ V. cholerae

d/ S. dysenteriae

e/ K. pneumoniae

f/ A. baumannii

The following infections are caused by E. coli, except: (2pt)

a/ dysentery

b/ meningitis

c/ diarrhea

d/ typhoid fever

e/ sepsis

f/ urinary tract infections

The following infections are caused by E. coli, except: (2pt)

a/ dysentery

b/ meningitis

c/ diarrhea

d/ typhoid fever

e/ sepsis

f/ urinary tract infections

Which of the following are C. tetani toxins: (2pt)

a/ tetanolysin

b/ tetanoplasmin

c/ tetanospasmin

d/ tetanoagglutinin

e/ tetanocyanin

f/ tetanocoagulisin

Which of the following are C. tetani toxins: (2pt)

a/ tetanolysin

b/ tetanoplasmin

c/ tetanospasmin

d/ tetanoagglutinin

e/ tetanocyanin

f/ tetanocoagulisin

H. pylori is associated with: (2pt)

a/ genital ulcers

b/ duodenal ulcers

c/ skin ulcers

d/ rectal ulcers

e/ mouth ulcers

f/ gastric ulcers

H. pylori is associated with: (2pt)

a/ genital ulcers

b/ duodenal ulcers

c/ skin ulcers

d/ rectal ulcers

e/ mouth ulcers

f/ gastric ulcers

Which of the following diseases are not vaccine preventable: (2pt)

a/ Lyme disease

b/ Poliomyelitis

c/ Measles

d/ Tuberculosis

e/ Chickenpox

f/ Scarlet fever

Which of the following diseases are not vaccine preventable: (2pt)

a/ Lyme disease

b/ Poliomyelitis

c/ Measles

d/ Tuberculosis

e/ Chickenpox

f/ Scarlet fever

Which of the following are rod-shaped bacteria: (2pt)

a/ S. aureus

b/ N. gonorrhoeae

c/ B. anthracis

d/ K. pneumoniae

e/ S. agalactiae

f/ C. albicans

Which of the following are rod-shaped bacteria: (2pt)

a/ S. aureus

b/ N. gonorrhoeae

c/ B. anthracis

d/ K. pneumoniae

e/ S. agalactiae

f/ C. albicans

Typical for the clinical presentation of cholera is: (2pt)

a/ rigor

b/ extremely high fever

c/ ‘rice water’ stools

d/ persistent vomiting

e/ cough

f/ blood in the stools

Typical for the clinical presentation of cholera is: (2pt)

a/ rigor

b/ extremely high fever

c/ ‘rice water’ stools

d/ persistent vomiting

e/ cough

f/ blood in the stools

Which of the following methods are not based on antigen-antibody interactions: (2pt)

a/ neutralization

b/ complement fixation

c/ western blotting

d/ fluorescent in-situ hybridization

e/ immunodiffusion

f/ MALDI-TOF MS

Which of the following methods are not based on antigen-antibody interactions: (2pt)

a/ neutralization

b/ complement fixation

c/ western blotting

d/ fluorescent in-situ hybridization

e/ immunodiffusion

f/ MALDI-TOF MS

Which of the following are opportunistic infections: (2pt)

a/ cryptococcosis

b/ salmonellosis

c/ aspergillosis

d/ shigellosis

e/ yersinosis

f/ campylobacteriosis

Which of the following are opportunistic infections: (2pt)

a/ cryptococcosis

b/ salmonellosis

c/ aspergillosis

d/ shigellosis

e/ yersinosis

f/ campylobacteriosis

Toxoid vaccines are used for the prophylaxis of which of the following diseases: (2pt)

a/ brucellosis

b/ yellow fever

c/ mumps

d/ listeriosis

e/ tetanus

f/ diphtheria

Toxoid vaccines are used for the prophylaxis of which of the following diseases: (2pt)

a/ brucellosis

b/ yellow fever

c/ mumps

d/ listeriosis

e/ tetanus

f/ diphtheria

Which of the following antibiotics is not inactivated by ESBLs: (2pt)

a/ Penicillin G

b/ Imipenem

c/ Ceftriaxone

d/ Cefotaxime

e/ Amoxicillin

f/ Meropenem

Which of the following antibiotics is not inactivated by ESBLs: (2pt)

a/ Penicillin G

b/ Imipenem

c/ Ceftriaxone

d/ Cefotaxime

e/ Amoxicillin

f/ Meropenem

The delayed hypersensitivity skin test is used in the diagnosis of diseases: (2pt)

a/ leprosy

b/ salmonellosis

c/ shigellosis

d/ tuberculosis

e/ scarlet fever

f/ legionellosis

The delayed hypersensitivity skin test is used in the diagnosis of diseases: (2pt)

a/ leprosy

b/ salmonellosis

c/ shigellosis

d/ tuberculosis

e/ scarlet fever

f/ legionellosis

Which of the following pathogenic factors are absent in B. pertussis: (2pt)

a/ filamentous haemagglutinin

b/ tracheal cytotoxin

c/ adenylate cyclase

d/ enterotoxins

e/ protein capsule

f/ pertussis toxin

Which of the following pathogenic factors are absent in B. pertussis: (2pt)

a/ filamentous haemagglutinin

b/ tracheal cytotoxin

c/ adenylate cyclase

d/ enterotoxins

e/ protein capsule

f/ pertussis toxin