Microbiology

What is Listeriosis? Listeriosis, also known as listeria infection, is a foodborne illness caused by the bacterium Listeria monocytogenes. It is a significant cause of foodborne illnesses worldwide. Here are some key points about listeriosis: It is important to note that the information provided here is a general overview of listeriosis. For specific guidance and … Read more

What are Coliforms?  Introduction Classification of Coliforms Escherichia  Edwardsiella Citrobacter  Klebsiella  Klebsiella rhinoscleromatis Klebsiella ozaenae  Klebsiella oxytoca  Enterobacter Hafnia  Serratia  Proteus  Morganella  Providencia  Erwinia

Morphology of Proteus Proteus demonstrates the following characteristics: Culture of Proteus Proteeae organisms are aerobic bacteria that thrive on common media like nutrient agar. On the medium, colonies of Proteus exude a putrefactive (or “fishy” or “seminal”) stench. Swarming Biochemical properties of Proteus Cell Wall Components and Antigenic Properties Antigens O and H are present … Read more

Chlamydia Human infections caused by Chlamydia species Bacteria Diseases Chlamydia trachomatis Lymphogranuloma venereum, ocular lymphogranuloma venereum, trachoma, adult inclusion conjunctivitis, neonatal conjunctivitis, infant pneumonia, and urogenital infections Chlamydophila pneumoniae Pharyngitis, sinusitis, bronchitis, and pneumonia Chlamydophila psittac Psittacosis General Properties  There are two morphologically distinct forms of chlamydiae: elementary body and reticulate body. Elementary body Reticulate … Read more

Classification of Serratia marcescens Habitat of Serratia marcescens Serratia Marcescens Taxonomy Serratia Marcescens as a Tracer Organism Serratia Marcescens Symptoms Serratia Marcescens as a Cancer Therapy? Morphology of Serratia marcescens  Virulence Factors of Serratia marcescens Hemolysin production Lipopolysaccharide Extracellular products   Serratia marcescens Pathogenesis  S. marcescens, an emerging multidrug-resistant organism, has the potential to manifest in … Read more

What is Flagella? Definition od Flagella Flagella are slender, whip-like appendages extending from certain cells, primarily serving the purpose of motility and, in some organisms, functioning as sensory organelles. They are found across various organisms, from bacteria and archaea to eukaryotic cells. Types of Flagella Flagella, whip-like appendages found in various organisms, play a pivotal … Read more

Domain: Bacteria Phylum: Actinomycetota Class: Actinomycetia Order: Mycobacteriales Family: Corynebacteriaceae Genus: Corynebacterium Species: C. diphtheriae What is Diphtheroids? (Corynebacterium diphtheriae) Characteristics of Diphtheroids/Corynebacterium diphtheriae The infectious disease known as diphtheria is caused by the bacterium Corynebacterium diphtheriae. Key characteristics of Corynebacterium diphtheriae are as follows: Due to pervasive vaccination programs, diphtheria is now uncommon in many … Read more

L-form bacteria Definition “L-form” bacteria are also referred to as L-phase bacteria or L-phase variants, and cell wall deficient (CWD) bacteria are bacteria with no cell walls. They were first identified around 1935, by the scientist Emmy Klieneberger Nobel who identified them as “L-forms” after the Lister Institute in London which she was working at. … Read more

Bacteria constitute a vital element in the ecology. They are essential to our health as well as the environmental health, play an essential role in the production of food, and offer bioengineers the tools to harness their abilities and produce compounds. However, they could also be harmful, causing harm and diseases. The capacity to cultivate … Read more

What is Colony Morphology of Bacteria? Colony morphology of bacteria means the visible features seen in bacterial colonies when they grow on solid media like agar plates. Each colony usually comes from one bacterial cell that divides and forms a clump. These clumps or colonies can look very different based on the species and conditions, … Read more