Microscopy - Best Biology Notes, Reference, Articles

Brightfield Microscope (Compound Light Microscope)- Definition, Principle, Parts

The brightfield microscope, also referred to as the compound light microscope, is a pivotal instrument used in various biological and medical research applications. Its functionality is based on the transmission of light through a specimen, with the resulting image being magnified by a series of lenses. Profound knowledge of its intricate components and their respective […]

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Blood Agar- Composition, Principle, Preparation, Uses and Hemolysis

Microscopy / Sayuja Koirala

An enhanced medium called blood agar (BA) is used to cultivate bacteria or other microorganisms that are difficult to grow. Because they require a different, more enriched nutritional environment than other bacteria, these bacteria are known as “fastidious.” Many pathogens, especially those that are more challenging to culture, like Neisseria species, Streptococcus pneumoniae, and Haemophilus

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Biochemical Test of Alcaligenes faecalis subsp. faecalis

Microscopy / Sayuja Koirala

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.

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Bacillus cereus- An Overview

Microscopy / Sayuja Koirala

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,

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Ascaris lumbricoides- Habitat and External Morphology

Microscopy / Sayuja Koirala

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

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Are Viruses Living or Non-Living? Or a Borderline

Microscopy / Sayuja Koirala

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

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3 Principles of Cell Theory with Historical Journey

Microscopy / Sayuja Koirala

As the fundamental functional unit of life, cells are the subject of “cell theory”, an internationally recognized idea that brings biological ideas, hypotheses, and principles together. Due to technical advancements in the microscope, science started to delve deeper and comprehend the nature of functioning cells and their biological processes. As fresh information becomes available, there

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