Abiogenesis Definition, Overview, Theory of Abiogenesis

Abiogenesis Definition Abiogenesis is the formation of organic molecules by forces other than organisms. While organisms can form carbon-carbon bonds relatively easily to enzymes, doing so would otherwise require large inputs of energy. Early in the history of science, this fact was used to dispute evolutionism, as it could not be imagined how organic molecules … Read more

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Chitin Definition, Examples, Function, and Structure

Chitin Definition Chitin is a large, structural polysaccharide composed of chains of modified glucose. Chitin is found in the exoskeleton of pests, the fungal cell wall and invertebrates, and some hard structures in fish. In terms of abundance, chitin is second only to cellulose. In the biosphere, more than 1 billion tons of chitin are … Read more

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Osmosis Definition, Process, Types, Examples, and Osmotic Pressure

Osmosis Definition Osmosis is a biophysical process that typically occurs in biological systems where the molecules of the solvent move towards a region of high solute concentration in a semi-permeable membrane. It is a type of passive transport and is directed towards a direction that equates solute concentrations across a semi-permeable membrane. It is a common … Read more

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What is Interphase? Stages, cell cycle, and Interphase

What is Interphase? Cells undergo continuous cell division, through which daughters cells are produced, which mature and also form their daughter cells, and this cycle continues. Cell cycle events include cell growth and cell division, the difference of which defines the stage of cell development where multiple metabolic reactions occur. Interphase is the preparation stage … Read more

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Protist Definition, Classification, Characteristics, Types, and Examples

Protist Definition Protists are a group of loosely interconnected, mostly unicellular eukaryotic organisms that are not plants, animals, or fungi. Not all of these organisms have a single feature, such as evolutionary history or morphology, and are informally placed under a separate state called the Protista. Therefore, protists are no longer a formal classification, and different … Read more

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Biochemistry Definition, History, Research And, Careers

Biochemistry Definition Biochemistry is the study of chemical reactions occurring inside organisms. It combines elements from both biology and chemistry. Biochemistry became a separate discipline in the early 20th century. Biochemists study relatively large molecules such as proteins, lipids, and carbohydrates, which are important in metabolism and other cellular activities; They also study molecules such … Read more

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Apoptosis Definition, Mechanisms, Regulation, Significance And, Examples

Apoptosis definition Apoptosis is a normal genetically programmed cell death where an aging cell at the end of its life cycle contracts and its remaining fragments are phagocytosed without any inflammatory reaction. The term apoptosis was first introduced in an article in 1972 by Kerr, Wyllie, and Currie to describe a morphologically distinct type of … Read more

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Definition of neutrophils, Low, High, Function and, Structure

Definition of neutrophils Neutrophils are a type of white blood cell with multilobed nuclei and stainable cytoplasmic granules. These are the most abundant granulocytes, occupying about 40-60% of the total number of white blood cells in the blood. Neutrophils, like all other blood cells, are formed from stem cells in the bone marrow. After differentiation … Read more

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Definition of centrioles, Function, Structure

Definition of centrioles Eukaryotic cells contain two rod-shaped, microtubular, cylindrical structures, called centrioles, near the nucleus. They lack a limiting membrane and no DNA or RNA and are found in most algae cells (a notable exception being red algae), moss cells, some fern cells, and most animal cells. They are absent in prokaryotic plants, red … Read more

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Ecosystem Definition, Types, Example and Explained

Ecosystem Definition An ecosystem or biome describes a unique environment and each living organism (biotic) and non-living factor (abiotic) that is contained in it or that characterizes it. An ecosystem embodies all aspects of a single habitat, including all interactions between its different elements. Ecosystem explained The content of an ecosystem can vary from light … Read more

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