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Bacteriologic Features of Neisseria Species

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Bacteriologic Features of Neisseria Species

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Questions and Answers

Which of the following best describes the characteristic of Haemophilus influenzae?

Gram-positive rods, encapsulated, facultative anaerobes

Pleomorphic, ranging from cocci to filaments, obligate anaerobes

Coccobacilli, capsulated, obligate intracellular parasites

Gram-negative rods, unencapsulated or encapsulated, aerobic (correct)

Which of the following statements about Bordetella pertussis is correct?

They are unencapsulated, facultative anaerobes that grow in biofilms.

They are pleomorphic, ranging from coccobacilli to long, slender filaments.

They are small, encapsulated coccobacilli that require cystine for growth. (correct)

They are Gram-positive cocci that grow in pairs or chains.

Which of the following statements about Legionella pneumophila is correct?

They are Gram-negative rods that contain lipopolysaccharide (LPS).

They are obligate intracellular parasites that grow in amoebas. (correct)

They are pleomorphic, ranging from cocci to filaments, and grow in pairs.

They are small, encapsulated coccobacilli that require cystine for growth.

Which of the following is a characteristic shared by Haemophilus influenzae, Bordetella pertussis, and Legionella pneumophila?

They are all primarily pathogens of the respiratory tract. Signup and view all the answers

Which of the following statements about the capsular types of Haemophilus influenzae is correct?

Haemophilus influenzae has six different capsular types. Signup and view all the answers

Which of the following statements about the growth requirements of Bordetella pertussis is incorrect?

Bordetella pertussis can grow in both aerobic and anaerobic conditions. Signup and view all the answers

Which of the following statements about Legionella pneumophila is incorrect?

Legionella pneumophila is a facultative anaerobe. Signup and view all the answers

Which of the following cell-surface molecules are used for serotyping Haemophilus influenzae?

Adhesins and fimbriae Signup and view all the answers

Which of the following statements about the growth requirements of Legionella pneumophila is correct?

Legionella pneumophila can grow in amoebas and environmental biofilms. Signup and view all the answers

Which of the following statements about the morphology of Bordetella pertussis is incorrect?

Bordetella pertussis can be encapsulated or unencapsulated. Signup and view all the answers