Microbiology MCQs

Nagglers reaction is used in the diagnosis of:

A. Malaria
B. Whooping cough
C. Gas gangrene
D. Wool sorters disease

Loss of capsule in bacteria is generally associated with:

A. Decease in virulence
B. Loss of infectivity
C. Inability to spread through tissue
D. increase in invasiveness

Encapsulation in bacteria helps in:

A. Spore formation
B. Decreased virulence
C. Prevent their phagocytosis
D. Oxygen effect

Neurotoxin of tetanus acts of:

A. Synapse
B. Muscle
C. Brain
D. Spinal card

Organism most frequently associated with urinary tract infections is:

A. Neisseria gonorrhea
B. Escherichia coli
C. T-strain mycoplasma
D. Streptococcus fecalis

Growth factor needed for Salmonella:

A. Tryptophan
B. Niacin
C. B-12
D. Citrate

Subacute bacterial endocarditis is caused by:

A. Streptococcus viridans
B. Haemolytic streptococci
C. Staphylococcus aureus
D. Nisseria

The diagnosis of gonorrhoea is established by:

A. Compliment fixation tests
B. Pili agglutination tests
C. Haemagglutination tests
D. All of the above tests

What is the transport medium for cholera:

A. Tellurite Medium
B. Cary Blair Medium
C. Venkatraman – Ramakrishnan Medium
D. B & C

Which organism causes prosthetic valve endocarditis within 60 days of surgery:

A. Streptococcus Viridans
B. Staphylococcus epidermis
C. Staphylococcus aureus
D. Fungus

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