10 Questions
Which of the following is a characteristic of Corynebacterium species?
Gram positive bacilli
What is the staining characteristic of metachromatic granules in many corynebacteria?
Alberts stain
What is the family to which Corynebacterium belongs?
Mycobacteriaceae
What is the arrangement of daughter cells during division in some Corynebacterium species?
L and V arrangement
What is the typical size of colonies of Corynebacterium on blood agar?
Small (1 to 2 mm)
Many corynebacteria possess ______, which are reserve phosphate polymers
metachromatic granules
In stained smear they occur singly, in palisades arrangement of parallel cells and in angular clusters resembling ______
Chinese letter
Corynebacterium species are small, pleomorphic Gram positive ______, occur in club and rod forms
bacilli
The cell wall of some species is weaker at one end resulting in club-shape and during division the daughter cells remained attached to one side, resulting in L and V arrangement referred to them as ______
Chinese letter
Colonies on blood agar are typically small (1 to 2 mm) and mostly ______
nonhemolytic
Study Notes
Characteristics of Corynebacterium Species
- Corynebacterium species are small, pleomorphic Gram-positive bacteria that occur in club and rod forms.
- They possess metachromatic granules, which are reserve phosphate polymers.
- In stained smears, they occur singly, in palisades arrangement of parallel cells, and in angular clusters resembling Chinese characters.
Colony Characteristics
- Colonies on blood agar are typically small (1-2 mm) and mostly grayish-white.
Cell Division and Arrangement
- The cell wall of some species is weaker at one end, resulting in a club-shape.
- During division, the daughter cells remain attached to one side, resulting in an L and V arrangement, referred to as raspberries.
Classification
- Corynebacterium belongs to the family Corynebacteriaceae.
Metachromatic Granules
- The staining characteristic of metachromatic granules in many corynebacteria is a distinct feature of this species.
Test your knowledge of Corynebacterium with this quiz! Learn about the general characteristics, genus, and family of this Gram-positive bacilli, including its membership in the CMN group and specific traits such as non-motility, catalase and oxidase positivity, and aerobic nature.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
