Biology is the branch of science that primarily deals with the structure, function, growth, evolution, and distribution of organisms. It’s a methodological study of life and living things.
Biology is the scientific study of life. It spans multiple levels, from biomolecules and cells to organisms and populations12. All living things share common biological phenomena, such as reproduction, cell division, and the transmission of genetic material.
What is Hepatitis B? Acute (short-term) and chronic (long-term) liver disease can be brought on by the viral illness H B. The HBV, which is contracted by coming into touch with infected blood or body fluids, is the cause of it. Hepatitis B is a serious liver infection caused by the hepatitis B virus (HBV). […]
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Cystic fibrosis (CF) is a chronic, progressive genetic disorder that affects the exocrine glands, leading to the production of abnormally thick and sticky mucus. This mucus can clog the airways and ducts in various organs, particularly the lungs and digestive system, causing a range of symptoms and complications. Cystic Fibrosis Key Characteristics Genetic Basis Impact
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What is Marfan syndrome? Marfan syndrome, a genetic disorder affecting connective tissues, paints a fascinating portrait of human biology. It’s characterized by a myriad of symptoms, many related to the skeletal system, but impacting the cardiovascular, ocular, and pulmonary systems as well. Understanding its genetic underpinnings, recognizing its diverse manifestations, and navigating its diagnostic journey
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What is Yersinia pestis? Yersinia pestis, a gram-negative, facultative anaerobic bacterium, is the causative agent of plague, a historically devastating disease responsible for countless deaths. Its unique characteristics, environmental adaptability, and potent virulence factors contribute to its dangerous nature, making it a significant public health concern. Characteristics The characteristics of Yersinia pestis, Morphology Y. pestis
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The Guinea worm, scientifically known as Dracunculus medinensis, is a parasitic roundworm that infects humans through contaminated water. This ancient scourge has plagued humanity for centuries, causing excruciating pain and disability. Understanding its life cycle, pathogenesis, and clinical manifestations is crucial for effective control and eradication. Life Cycle of Dracunculus medinensis: A Tale of Two Hosts
What is Leprosy? Leprosy, also known as Hansen’s disease, is a chronic infectious disease caused by the bacterium Mycobacterium leprae. It primarily affects the skin, peripheral nerves, upper respiratory tract, eyes, and testicles. While once feared and stigmatized, it is curable with multidrug therapy. Transmission It is spread through prolonged close contact with an untreated person
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Wuchereria bancrofti Wuchereria bancrofti is a parasitic roundworm responsible for lymphatic filariasis, a debilitating and often disfiguring disease affecting millions worldwide. Understanding its morphology, life cycle, and epidemiology is crucial for effective control and prevention. Morphology Wuchereria bancrofti, like other filarial worms, has a long, thread-like body. The adult female worm can reach up to
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Listeriosis, caused by the bacterium Listeria monocytogenes, is a serious health danger, especially for pregnant women, newborns, the elderly, and those with immune deficiencies. The bacterium uses a variety of virulence factors, including internalin (InlA and InlB) for cellular invasion, listeriolysin O (LLO) for phagosome escape, ActA for intracellular movement via actin polymerization, and phospholipases
Leishmaniasis is a group of infectious diseases caused by protozoan parasites belonging to the genus Leishmania. These parasites are transmitted to humans through the bite of infected sandflies. The disease manifests in various forms, each with distinct clinical features and severity: Visceral Leishmaniasis (Kala-azar) The Most Severe Form: It, commonly known as kala-azar, is the most serious
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Understanding bacterial growth is crucial in various fields, from medicine to biotechnology. One commonly used method for quantifying bacterial growth is through the use of a UV spectrophotometer. This technique relies on the principle that bacteria, like many other biological molecules, absorb light at specific wavelengths. What is Spectrophotometer? An equipment used in science to
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