Under the lens of a microscope lies a world of wonder, and one of the fascinating creatures to observe is the humble worm. These ancient beings have been roaming the earth for hundreds of millions of years, evolving into the diverse forms we see today. In 2018, an article published in National Geographic unveiled the … Read more
• Edited by Sourav Pan • • 1 revisions • 9 min read
Onion cells under a microscope offer a classic and revealing glimpse into plant anatomy, showing clear rectangular cells with defined walls and central nuclei, and that somewhat large central vacuole, as students often note. Since the onion bulb isn’t meant for photosynthesis its epidermal cells lack chloroplasts, making its cell membrane, cytoplasm, nucleus positioned at … Read more
What is Protists? Protists are a group of eukaryotic organisms belonging to the Kingdom Protista. They are distinct from animals, plants, and fungi. While all protists are eukaryotes with a nucleus and cellular organelles, they can vary widely in their characteristics. The majority of protists are unicellular, although there are a few multicellular protists, with … Read more
What is Salmonella? Salmonella is a group of gram-negative bacillus bacteria that is responsible for causing food poisoning and subsequent infections in the intestinal tract. While some infections can be effectively treated, there are certain strains that have developed resistance to antibiotics, making them potentially deadly. Consequently, Salmonella infections should not be underestimated and require … Read more
E. coli, short for Escherichia coli, is a versatile bacterium that can be found in a variety of environments, including certain foods, soil, and the intestines of animals, including humans. It belongs to the genus Escherichia and exhibits a wide diversity of strains. While many strains of E. coli are harmless and even beneficial, some … Read more
Features of Malignant Cells Malignant cells exhibit the following characteristics: It has been hypothesised that the immune system is partially responsible for protecting the body from the development of cancers. In addition, the presence of multiple tumours in immunocompetent individuals suggests that the immune system has a limited function in defending against cancer and is … Read more
What is Stem cell? Stem Cells Definition Stem cells are unique cells in the body that have the potential to develop into different types of specialized cells or divide to produce more stem cells. Properties of Stem Cells Stem cells possess several intrinsic properties that make them unique and give them remarkable capabilities: These properties … Read more
What is T cell (T Lymphocyte)? Definition of T cell (T Lymphocyte) T cells, also known as T lymphocytes, are a type of white blood cell that plays a crucial role in the immune system. They are responsible for recognizing and attacking foreign pathogens, infected cells, and cancer cells. T cells have specialized receptors on … Read more
What are B cells or B lymphocytes? Definition of B cell (B lymphocyte) A B cell, or B lymphocyte, is a type of white blood cell that produces antibodies and plays a crucial role in the immune response against infections. Morphology of B cell (B lymphocyte) Structure of B cell (B lymphocyte) Stage-specific Markers Antigen-binding … Read more
What are Neutrophils? Neutrophils Definition Neutrophils are a type of white blood cell that plays a crucial role in the immune system’s defense against infections. They are highly mobile and act as phagocytes, engulfing and destroying bacteria and other harmful substances. Neutrophils are characterized by their multi-lobed nuclei and stainable cytoplasmic granules. They are part … Read more
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