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Questions and Answers
Which of the following is a characteristic of Streptococci?
Which of the following is a characteristic of Streptococci?
What is the typical arrangement of Streptococci?
What is the typical arrangement of Streptococci?
What is the size range of Streptococci?
What is the size range of Streptococci?
What is the growth characteristic of Streptococci on BAP (Blood Agar Plate)?
What is the growth characteristic of Streptococci on BAP (Blood Agar Plate)?
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Which type of anaerobe are Peptostreptococci?
Which type of anaerobe are Peptostreptococci?
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Study Notes
Characteristics of Streptococci
- Gram-positive bacteria characterized by their spherical shape and tendency to form chains or pairs.
- Non-motile and do not produce spores.
Typical Arrangement
- Streptococci typically arrange themselves in chains or pairs, differentiating them from other bacterial formations.
Size Range
- Streptococci have a size range of approximately 0.5 to 1.0 micrometers in diameter, making them relatively small bacteria.
Growth on Blood Agar Plate (BAP)
- Streptococci exhibit different hemolytic patterns on Blood Agar Plates, indicating their ability to lyse red blood cells. They can display alpha (partial), beta (complete), or gamma (non-hemolytic) hemolysis.
Type of Anaerobe in Peptostreptococci
- Peptostreptococci are classified as anaerobic bacteria, specifically obligate anaerobes, meaning they thrive in environments devoid of oxygen.
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Description
Test your knowledge of the general characteristics and biochemical tests of streptococci, a common Gram-positive bacteria found in normal flora but can cause life-threatening infections when accessing sterile sites.
