Gram-negative, aerobic, non-fermentative bacteria that is a member of the Alcaligenaceae family is called Alcaligenes faecalis. It is frequently found in soil, water, and ecosystems that are related to both people and animals, such as the digestive system. This particular bacteria is well-known for having the capacity to emit a peculiar fruity smell. Although A. […]
Biochemical Test of Alcaligenes faecalis subsp. faecalis Read More »
A selective and differential culture medium called Bile Esculin Agar (BEA) is mainly utilized for the isolation and tentative identification of group D streptococci and enterococci. This medium takes use of the bacteria’s capacity to hydrolyze esculin when bile salts are present. A dark brown or black precipitate is formed when ferric citrate in the
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BCYE Agar species are isolated and cultivated using agar, a specific culture medium. It can also stimulate the development of other picky organisms. A form of selective growth medium that is used to cultivate or grow specific bacteria, especially Legionella pneumophila, a Gram-negative bacterium. Buffered Charcoal Yeast Extract, or BCYE Legionella species are isolated and
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The bacterial growth curve represents the growth of a bacterial population over time in a closed environment (batch culture). It is typically divided into four distinct phases: lag phase, log (exponential) phase, stationary phase, and death (decline) phase. Each phase has specific characteristics and biological significance. The basic process of bacterial development has significant ramifications
Bacillus cereus is a gram-positive, rod-shaped bacterium commonly found in soil, food, and even marine sponges. While some strains are beneficial, others can cause foodborne illness in humans due to their toxin-producing nature and ability to form spores. Although B. cereus is most frequently linked to food poisoning, the bacterium can also induce post-traumatic ophthalmitis,
An autoclave is a machine that uses pressured steam for a predetermined amount of time to sanitize materials and equipment. It is utilized in industrial, medicinal, and laboratory environments where it kills bacteria and spores by operating at high temperatures and pressures. All microbiological life, including bacteria, viruses, fungi, and spores, is efficiently eliminated throughout
Autoclave: Parts, Principle, Procedure, Types, Uses Read More »
Ascaris lumbricoides is a species of parasitic roundworm (nematode) that infects the intestines of humans. It is one of the largest and most common human intestinal parasites. The adult worms reside in the lumen of the small intestine, where they can cause a range of health problems, from mild gastrointestinal discomfort to severe malnutrition and
Ascaris lumbricoides- Habitat and External Morphology Read More »
Viruses are considered borderline between Living or Non-living entities due to their dual nature; certain characteristics indicate that viruses are living or non-living. The virus is a tiny infectious agent that uses the process of ‘infection’ to copy its genetic material. Robert Koch (1843-1910) created the term “virus“. They are the smallest known forms of
Are Viruses Living or Non-Living? Or a Borderline Read More »
AP Biology encompasses a wide array of subjects, including cell structure and function, molecular biology, genetics, evolution, ecology, and physiology. It delves into both the unity and diversity of life on Earth, emphasizing critical thinking and inquiry-based learning. AP Biology Course Overview Course Content The AP Biology course delves into fundamental biological concepts such as
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An Anticodon is a triplet of nucleotides in a transfer RNA (tRNA) molecule complementary to a particular codon on a messenger RNA (mRNA) strand. It plays an important role in protein formation. The mechanism behind its function is complementary base pairing, in tRNA couples with the codon on mRNA, guaranteeing that the right amino acid
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