The capsule of Haemophilus influenzae type b is composed of

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $24.99Unlock all

Prepare for the Clinical Laboratory Science Bacteriology Test. Engage with multiple choice questions and flashcards with helpful hints and explanations. Ace your exam confidently!

Multiple Choice

The capsule of Haemophilus influenzae type b is composed of

Explanation:
Haemophilus influenzae type b has a capsule that is a polysaccharide made of polyribitol phosphate, i.e., repeating ribitol phosphate units. This capsule acts as a key virulence factor, helping the bacterium resist phagocytosis and cause invasive disease. It also underpins the Hib vaccine, which uses this polymer (usually conjugated to a protein to boost the immune response in infants). The capsule is not composed of lipopolysaccharide, a protein capsule, or a glycolipid capsule, making polyribitol phosphate the correct description.

Haemophilus influenzae type b has a capsule that is a polysaccharide made of polyribitol phosphate, i.e., repeating ribitol phosphate units. This capsule acts as a key virulence factor, helping the bacterium resist phagocytosis and cause invasive disease. It also underpins the Hib vaccine, which uses this polymer (usually conjugated to a protein to boost the immune response in infants). The capsule is not composed of lipopolysaccharide, a protein capsule, or a glycolipid capsule, making polyribitol phosphate the correct description.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy