TECHNIQUES OF ENUMERATING BACTERIAL CELL NUMBERS AND CELL MASS
Many techniques exist for the measurement of microbial growth in terms of assessing microbial cell numbers and microbial cell mass. These methods as stipulated in […]
General Microbiology
MICROBIAL (BACTERIAL) GROWTH PHASE
Microbial cells can exhibit different growth patterns depending on the availability of growth nutrients in their immediate environment. In batch culture for example, microbial cells […]
MICROBIAL GROWTH: DOUBLING TIME AND BINARY FISSION
Growthis simply defined as an irreversible increase in the size of an organism. It is one of the characteristics of living organisms. In microbiological terms, […]
GENERAL GUIDELINE FOR THE PREPARATION OF CULTURE MEDIA IN THE MICROBIOLOGY LABORATORY
Measure out the correct amount of distilled water required for the culture media preparation using a measuring cylinder. The water should be dispensed into a […]
TYPES AND CLASSIFICATION OF CULTURE MEDIA
GENERAL PURPOSE MEDIA General purpose media or basic medium is a routine culture media which is used for the cultivation of microorganisms in the microbiology […]
UPTAKE OF NUTRIENTS BY MICROORGANISMS: DIFFUSION & ACTIVE TRANSPORT
Microbial cells employ a variety of mechanisms to uptake nutrients (including macromolecules, inorganic ions, water and other small molecules) from their natural environment or from […]
NUTRITIONAL GROUPS OF MICROORGANISMS
Living organisms vary in terms of their mode of nutrition i.e., how they feed or obtain their food. Some organisms are known as autotrophs because […]
BACTERIAL NUTRITION: AN UNDERSTANDING OF NUTRITIONAL REQUIREMENTS OF MICROORGANISM
Bacterial nutrition is important for the optimum growth of the organism because it is one of the major means by which the organism can acquire […]
MICROBIOLOGY TECHNIQUES: APPLICATIONS AND USES
The microbiology laboratory is unique and different from the laboratory of other biological and medical sciences in that it has some fundamental techniques which the […]
MICROORGANISMS AND THEIR COLONIAL CHARACTERISTICS
Microorganisms (bacteria and fungi inclusive) produce definite patterns on culture media plates as they grow and divide. These specific patterns (inclusive of shapes and sizes) […]
THE MICROBIAL DIVERSITY: EUBACTERIA, ARCHAEA AND BACTERIA
The phylogenetic tree of life comprises mainly of Eubacteria (referring to eukaryotic organisms), Archaea and Bacteria (which are prokaryotic organisms).Eubacteria or Eukarya, Archaea and Bacteriaare […]
CLASSIFICATION / GROUPS OF MICROORGANISMS ACCORDING TO THEIR TAXONOMY
There are billions of microorganisms in the face of the planet earth, and these organisms are ubiquitously distributed. To make sense of the diversity of […]