BIOGEOCHEMICAL CYCLING
The phrase “biogeochemical” is derived from three words: bio (which involves living biological organisms like man, animals, plants and microbes found in the ecosystem), geo […]
Month: June 2020
CLASSIFICATION OF MUTATION BY THEIR EFFECTS ON THE DNA MOLECULE
Based on their effects on the structural integrity of the DNA molecule, mutations can be classified as substitution, insertion, deletion, inversion, reciprocal translocation and chromosomal […]
NEISSERIA GONORRHOEAE
Neisseria gonorrhoeae is a Gram-negative, oxidase-positive, non-motile, non-sporulating, non-capsulate, diplococcus found asymptomatically in humans. N. gonorrhoeae is found in the family Neisseriaceae and genus Neisseria […]
MYCOTOXINS
Mycotoxins are exotoxins produced by fungi. The area of microbiology that studies fungi and the toxins they produce (i.e., mycotoxins) is known as mycotoxicology. The […]
ORAL THRUSH (ORAL CANDIDIASIS)
Oral thrush (oral candidiasis) is a localized fungal infection caused by Candida albicans in the oral cavity of humans such as the tongue, lips and […]
FUNGAL INFECTIONS (MYCOSES)
MYCOSES Mycoses are infections caused by pathogenic fungi. And they include superficial mycoses, cutaneous mycoses, subcutaneous mycoses, systemic or deep-seated mycosis and opportunistic mycoses. The […]
MICROSCOPIC STRUCTURES OF SOME FUNGI
Penicillium: Penicillium is a genus of ascomycetous fungi. It belongs to the ascomycota fungi division. Ascomycota is the largest division of fungi. This genus of […]
FUNGAL REPRODUCTION
Fungal reproduction is unique and distinct from those of other microbial cells such as bacteria. Generally, fungi exhibit two modes of reproduction which are sexual […]
SLIME MOULDS
Slime moulds are eukaryotic organisms that have fungus-like features as well as some animal- or protists-like features. They are ubiquitously found in the soil, dead […]
FUNGAL TAXONOMY (DIVISION)
Fungal classification or taxonomy as shall be seen later in this section is usually based on the sexual spores produced by the organisms. This is […]
FUNGAL MORPHOLOGY (THALLUS)
Fungi unlike other groups of microorganisms possess or have unique structures and morphological features which distinguish them from other microbial cells including bacteria, viruses, algae […]
GENERAL SIGNIFICANCE OF FUNGI
Fungi are saprophytic organisms. They breakdown organic matter in the environment, and thus enhance nutrient recycling in the natural environment. They are used in the […]