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Latest Notes
Plasma Membrane Models: Types, History, Diagrams and Comparison
Learn the major plasma membrane models, from Overton and Gorter-Grendel to the Davson-Danielli, Robertson and Singer-Nicolson fluid mosaic models, with diagrams and comparison.
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Peripheral Protein: Definition, Membrane Binding, Functions, and Examples
Learn what peripheral proteins are, how they attach to cell membranes, their major functions and examples, and how they differ from integral proteins.
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Y-Shaped Energy Flow Model – Diagram, Working and Examples
Learn the Y-shaped energy flow model with a labelled diagram, grazing and detritus pathways, examples, advantages, limitations and comparisons.
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Channel Protein: Structure, Types, Mechanism, and Functions
Learn what a channel protein is, how its selective pore enables membrane transport, major channel types, their functions, and how channels differ from carriers.
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Red Blood Cell – Morphology, Size, Shape, Color and Inclusion Bodies
Red blood cells constitute the primary cellular component in blood. Red blood cells that are mature are biconcave discs which have no nucleus and…
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Cytoskeleton: Structure, Components and Functions
Learn how the cytoskeleton is built from actin filaments, intermediate filaments, and microtubules and how it controls cell shape, transport, movement, and division.
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Microtubules – Definition, Structure, Functions
Learn what microtubules are, how α- and β-tubulin form their structure, why they grow and shrink, and how they support transport, mitosis, cilia, and…
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Opsonization: Definition, Mechanism, Opsonins, and Examples
Opsonization is the immune process that coats pathogens with opsonins such as IgG and C3b to enhance phagocytosis. Learn its mechanism, receptors, types, examples,…
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Microfilaments: Definition, Structure, Functions & Formation
Microfilaments are thin actin filaments of the cytoskeleton. Explore their structure, polarity, dynamics, functions, locations and differences from other cytoskeletal filaments.
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Intermediate Filaments – Definition, Structure, Function
Learn how intermediate filaments are built, why they are non-polar, where keratins, vimentin, neurofilaments and lamins occur, and how they support cell and tissue…
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