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Streptococcus Pneumoniae: Characteristics and Virulence Factors

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Streptococcus Pneumoniae: Characteristics and Virulence Factors

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Questions and Answers

What is the primary function of the extracellular enzyme elastase in Pseudomonas aeruginosa?

Causing septic shock

Inhibiting protein synthesis

Facilitating invasion into the blood (correct)

Damaging cilia and causing cell death

Why is Pseudomonas aeruginosa a major cause of nosocomial infections?

Because it can only cause infections in immunosuppressed individuals

Because it can grow in simple aqueous solutions

Because it can withstand disinfectants and antibiotics (correct)

Because it can cause infections in healthy individuals

Which of the following is a characteristic of Pseudomonas aeruginosa that makes it a challenging pathogen to treat?

Its ability to form adherent biofilms

Its ability to inhibit protein synthesis

Its broad antibiotic resistance (correct)

Its ability to cause septic shock

What is the primary site of infection in patients with cystic fibrosis infected with Pseudomonas aeruginosa?

Respiratory tract Signup and view all the answers

Which of the following is a complication of Pseudomonas aeruginosa infection in diabetic patients?

Malignant otitis externa Signup and view all the answers

What is the role of pyocyanin in Pseudomonas aeruginosa infection?

Damaging cilia and causing cell death Signup and view all the answers

Which of the following is a feature of Pseudomonas aeruginosa that makes it a difficult target for vaccine development?

Its ability to form adherent biofilms Signup and view all the answers

What is the most common type of infection caused by Pseudomonas aeruginosa in hospital settings?

Ventilator-associated pneumonia Signup and view all the answers

Which of the following is a risk factor for Pseudomonas aeruginosa infection?

All of the above Signup and view all the answers

What is the mechanism of action of Exotoxin A in Pseudomonas aeruginosa infection?

Inhibiting protein synthesis Signup and view all the answers