Cell Wall Lipids in Mycobacteria
12 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which group of mycobacteria grows slowly, does not produce pigment, forms smooth colonies, and is resistant to isoniazid?

  • Group 1
  • Group 2
  • Group 4
  • Group 3 (correct)

What is the habitat for Mycobacterium bovis and Mycobacterium tuberculosis?

  • Forests
  • Marine environments
  • Air
  • Soil and water (correct)

Which species of mycobacteria has been implicated in epizootics of bovine mastitis?

  • Mycobacterium fortuitum (correct)
  • Mycobacterium avium
  • Mycobacterium leprae
  • Mycobacterium tuberculosis

Which term is derived from the small granulomatous nodules seen in advanced infections by M.tuberculosis or M.bovis?

<p>Tuberculosis (C)</p> Signup and view all the answers

Which subgroup of mycobacteria are classified as rapid growers and mature in less than one week at specified temperatures?

<p>M. fortuitum subgroup (D)</p> Signup and view all the answers

What type of parasites are M.avium, M.bovis, and M.fortuitum classified as?

<p>Facultative intracellular parasites (B)</p> Signup and view all the answers

What is the main reason for the slow growth and resistance of mycobacteria?

<p>Their high lipid content in the cell wall (D)</p> Signup and view all the answers

Which of the following is a component of the lipid in mycobacteria?

<p>Trehalose 6,6' dimycolate (cord factor) (B)</p> Signup and view all the answers

Which group of mycobacteria produce a yellow pigment only when exposed to light?

<p>Group 1 (photochromogenic strains) (C)</p> Signup and view all the answers

Which of the following mycobacteria can cause pulmonary disease in humans?

<p>M. kansasii (B)</p> Signup and view all the answers

What is the main characteristic of the scotochromogenic group of mycobacteria?

<p>They grow slowly and produce a yellow pigment in light or dark (D)</p> Signup and view all the answers

What is the characteristic shape of mycobacteria?

<p>Curved or straight rods (A)</p> Signup and view all the answers

More Like This

Use Quizgecko on...
Browser
Browser