Tag: Streptococci

Different Size, Shape and Arrangement of Bacterial Cells 4.44/5 (384)

Different Size, Shape and Arrangement of Bacterial Cells

Different Size, Shape and Arrangement of Bacterial Cells Bacteria are prokaryotic, unicellular microorganisms, which lack chlorophyll pigments. The cell structure is simpler than that of other organisms as there is no nucleus or membrane bound organelles. Due to the presence of a rigid cell wall, bacteria maintain a definite shape, though they vary as shape, size and […]

Haemolysis of Streptococci and its types with examples 4.5/5 (145)

Haemolysis of Streptococci and its types with examples

Haemolysis of Streptococci and its types with examples Hemolysis is the breakdown of red blood cells (RBC). A substance that causes hemolysis is a hemolysin. Brown (1919) introduced three terms alpha, beta and gamma to indicate three types of streptococci based on haemolytic reactions observed on blood agar plates. Beta-hemolytic Streptococci Source : Bacteria in Photos […]

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