Introduction Nutrient Agar (NA) is one of the most commonly used basal solid culture media in microbiology laboratories. It supports the growth of a wide variety of non-fastidious bacteria and serves as a foundation for
Introduction Sugar media are specialized differential culture media used in microbiology to detect the ability of bacteria to ferment specific carbohydrates such as glucose, lactose, sucrose, or mannitol. During fermentation, bacteria produce acid and sometimes
Introduction Peptone water is one of the simplest basal liquid media used in microbiology. It provides the essential nutrients for the growth of many non-fastidious bacteria. Although not very nutritious by itself, it serves as
Introduction utrient broth is one of the most common and basic culture media used in microbiology laboratories. It provides the essential nutrients required for the growth of non-fastidious bacteria and serves as the foundation for
Growth Media in Microbiology – Types, Uses, and Examples Introduction Growth media (culture media) are specially prepared nutrient solutions or solid preparations that support the growth, isolation, and identification of microorganisms in the laboratory. They
Bacterial Morphology Introduction Bacterial morphology refers to the shape, size, and structural arrangement of bacteria. Understanding morphology is crucial in microbiology because it helps in identification, classification, pathogenesis study, and diagnosis of bacterial infections. Size
Streptococcus Pneumoniae Introduction Gram-positive, α-hemolytic diplococcus. Major cause of community-acquired pneumonia, meningitis, otitis media, sinusitis, septicemia. First described by Pasteur (1881).Lancet-shaped diplococci, surrounded by a prominent capsule.Facultative anaerobe, non-motile, non-spore forming, catalase-negative. Pneumococcus Species Only
Biochemical Tests in Microbiology –Types & Examples Introduction Biochemical tests are laboratory procedures used to identify bacteria based on their enzymatic activities and metabolic characteristics. They are crucial in clinical microbiology for differentiating organisms, confirming
Enterococcus Introduction Enterococcus is a genus of Gram-positive bacteria. At first, scientists classified them as Group D Streptococcus, but later on, they recognized Enterococcus as a separate genus. In addition, these organisms naturally reside in
Streptococcus Introduction Gram-positive cocci in chains or pairs.Facultative anaerobes, non-motile, non-spore forming, catalase-negative.Normal flora of upper respiratory tract, skin, intestine, genital tract.Causes pyogenic, toxigenic, and immune-mediated diseases. Streptococci Species 1.β-hemolytic Streptococci Group A: S. pyogenes