Definition & Function 2:43 a minute, narrow tubelike cell structure composed of a protein similar to actin, occurring singly and in bundles, involved in cytoplasmic movement and changes in cell shape. The first filaments were made from carbon, now they are usually made from tungsten because of its high melting point. Online Shopping at SpotCost.com - New and used books like Anther and Pollen From Biology to Biotechnology 3rd edition by from Springer ISBN-10: 3-540-64986-7 ISBN-13: Full article >>> Definition of anther from Webster's New World College Dictionary. Cytoskeleton definition is - the network of protein filaments and microtubules in the cytoplasm that controls cell shape, maintains intracellular organization, and is involved in cell movement. Sign up. Home > Science > Biology > The Function of Intermediate Filaments The Function of Intermediate Filaments Intermediate filaments (IFs) are a type of cytoskeletal fiber found in many eukaryotic cells; they're also believed to be found in fungi and other single-celled eukaryotes, but that has not been fully accepted by scientists. The filament supports the anther, which is where pollen develops. Fragmentation happens in different ways. The word filament is from the Latin word filum, which means "thread." [>>>] But the primary importance of the cytoskeleton is in cell motility. Inspire your inbox – Sign up for daily fun facts about this day in history, updates, and special offers. A type of protein filament that interacts with actin filaments to cause cell contraction. They have roles in cell movement, muscle contraction, and cell division. sliding filament theory A proposed mechanism of muscle contraction in which the actin and myosin filaments of striated muscle slide over each other to shorten the length of the muscle fibres (see sarcomere). Intermediate Filament Definition. Don't have an account yet? Part of a stamen, the male part of a flower. Microfilaments, also called actin filaments, are polymers of the protein actin that are part of a cell’s cytoskeleton. A filament is topped by the anther. ment (fĭl′ə-mənt) n. 1. The most widely accepted theory explaining how muscle fibers contract is called the sliding filament theory. The internal movement of cell organelles, as well as cell locomotion and muscle fiber contraction could not take place without the cytoskeleton. The sliding filament theory can be best explained as the following. b. Intermediate Filament. There are three types of filaments: microtubules, microfilaments (known as actin filaments), and … …a long slender stalk, the filament, with a two-lobed anther at the tip. How to use filament in a sentence. Microfilaments are the smallest filaments of the cytoskeleton. Other articles where Filament is discussed: None. 3. In some cases, the middle lamellae of the end walls of the cells dissolve, thereby causing breakage of the filament. Learn more. filament meaning: 1. a thin thread or fibre of natural or artificial material: 2. a thin wire, especially one that…. Learn / Biology / Intermediate Filament. The stalk that bears the anther in the stamen of … A slender or threadlike structure or part, especially: a. Together the anther and filament make up the flower's stamen. filament definition in English dictionary, filament meaning, synonyms, see also 'filamentary',filamentous',flamen',filmset'. the wire inside a light bulb filament noun [C] (STEM) Within the anther reside the microsporangia, which will ultimately develop into pollen grains. Learn / Biology / Thin Filament. A fine wire that is heated electrically to produce light in an incandescent lamp. 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(ˈfɪl ə mənt) n. 1. a very fine thread or threadlike structure; a fiber or fibril: filaments of gold. Axial Filament Explanation: Axial filaments help spirochaetes to distinguish itself from other phyla of bacteria., to learn online microbiology courses. In an incandescent light bulb, a fine wire called a filament is heated to high temperatures in a bulb that lacks oxygen to prevent the filament from catching fire as it is heated. He has a master's degree in science education. It's free and takes five seconds. These possess a diameter of 8-12 nm. Whether you're a student, an educator, or a lifelong learner, Vocabulary.com can put you Sliding Filament Theory. A fine or very thin thread or fiber: filaments of cloth; filaments of flax. The stamen of a flower — the part that produces pollen — consists of a slender stalk, called a filament and an anther. Derrick has taught biology and chemistry at both the high school and college level. Prokaryotic cells have a … It's free and takes five seconds. All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. The filament supports the anther, which is where pollen develops. Choose from 500 different sets of filament biology flashcards on Quizlet. intermediate filament: n. Any of a group of protein filaments that are a component of the cytoskeleton in animal cells, are composed of a variety of proteins such as lamins and keratins, and provide structural support for the cytoplasm and nucleus. Filamentation, an elongation of individual bacterial cells. https://medical-dictionary.thefreedictionary.com/filament, "MOBI's vehicle identity standard is the first specification, Evonik, a global leader in biomaterials for medical implants, today announced the launch of a new line of RESOMER[R], But this new discovery would suggest that the intergalactic highways are also "paved with matter. A stamen is the male reproductive organ of flowering plant species that produces pollen. filament noun [C] (WIRE) a thin thread or wire, esp. The word filament is from the Latin word filum, which means "thread." Axial Filament Definition: Type of flagellum (called endoflagellum) that lies in periplasmic space of spirochetes. Filament, in fact, can be a … 2. the stalklike portion of a stamen, supporting the anther. Some cellular examples include: Filaments are also highly dynamic in nature and far from a static structure that acts as a stable "scaffold" for a cell. The nuclear lamina is a dense fibrillar network inside the nucleus of an eukaryotic cell. filament. iBiologia provides the definition, information, Examples, and facts related to daily life science and common biology terms, including molecular biology, cell biology, genetics, ecology and more! For a muscle contraction to take place, there must be a stimulation first to form an impulse (action potential) from a neuron that connects to the muscle. The stamen of a flower — the part that produces pollen — consists of a slender stalk, called a filament and an anther. composed primarily of two long chains of many globular actin proteins (G-actin) G-actin. Besides providing mechanical support, the nuclear lamina regulates important cellular events such as DNA... Full article >>> The nuclear envelope (NE) is a double lipid bilayer that encloses the genetic material in eukaryotic cells. 2. a very fine thread or threadlike structure; a fiber or fibril: filaments of gold. The anther consists of four saclike structures (microsporangia) that produce pollen for pollination. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. Learn filament biology with free interactive flashcards. filament -- Long chain of proteins, such as found in hair, muscle, or in flagella. in a eukaryotic cell, the dynamic framework of diverse protein filaments that structurally support, organize, and move the cell and internal structures. In case of mechanical injuries, the spirogyra filament breaks into fragments, and each fragment develops into a new filament. The filament of a flower is one of the male reproductive parts of the plant. They are often bundled together for strength and rigidity. Overview Of Thin Filament. tropomyosin. Hypha, a thread-like cell in fungi and Actinobacteria. A muscle is a complex unit containing several muscle fasciculus. Thin Filament Definition. a thin wire (usually tungsten) that is heated white hot by the passage of an electric current, a metal conductor that carries electricity over a distance, one of the parallel filaments projecting from the main shaft of a feather, filaments from a web that was spun by a spider, one of two identical strands into which a chromosome splits during mitosis, one of many contractile filaments that make up a striated muscle fiber, any of various slender filaments that function as roots in mosses and ferns and fungi etc, any of the threadlike filaments forming the mycelium of a fungus, a sterile simple or branched filament or hair borne among sporangia; may be pointed or clubbed, a specialized fungal hypha that produces conidia, fungus causing soft watery rot in fruits and vegetables and rings of dry rot around roots of sweet potatoes, a dense mass of hyphae forming a root-like structure characteristic of many fungi, a slender and greatly elongated substance capable of being spun into yarn, any of the cylindrical filaments characteristically growing from the epidermis of a mammal, a hair that does not emerge from the follicle but remains embedded in the skin (usually causing inflammation), a particular complex anatomical part of a living thing, a slender or elongated structure that supports a plant or fungus or a plant part or plant organ. fission -- Division of single-celled organisms, especially prokaryotes, in which mitosis does not occur. 2. in an x-ray tube, the wire (cathode) that makes electrons available for interaction with the anode when it is heated to incandescence to form an electron cloud. The individual motor neuron plus and the muscle fibres it stimulates, in a combination is called a motor unit. This happens when the temperature and the pH of the water changes. It is composed of intermediate filaments and membrane associated proteins. (in an incandescent lamp) the threadlike conductor, often of tungsten, that is heated to incandescence by the passage of current. Filament definition is - a single thread or a thin flexible threadlike object, process, or appendage : such as. a single fibril of natural or synthetic textile fiber, of indefinite length, sometimes several miles long. Enrich your vocabulary with the English Definition dictionary Thin Filament. The cytoskeleton is the network of protein filaments that extends throughout the cell, giving the cell structure and keeping organelles in place. When a flower opens, the filaments can be seen inside, thrusting up like stems within the flower itself. Protein filament, a long chain of protein subunits, such as those found in hair or muscle. In biology, a filament is a "long chain of proteins, such as those found in hair, muscle, or in flagella ". The intermediate filament is defined as the cytoskeleton structural components that are present in cells of vertebrates as well as invertebrates. Sign up. thin filament. fil•a•ment. has an active site that will bind to the myosin protein on thick filaments so that it can move the thin filament during contraction. The stamen is comprised of an anther, which is connected to a filament (pictured below). Also used to refer to mitosis in certain unicellular fungi. Filament, in fact, can be a synonym for thread. a long slender cell or series … 1. a delicate fiber or thread. Source for information on sliding filament theory: A Dictionary of Biology dictionary. Small secretory structures, called nectaries, are often found at the base of the stamens; they … The filament begins to glow and gives off light. Definition. The thin filaments are myofibrils that are composed of actin proteins and are arranged in helically to form long filaments. According to this theory, myosin filaments use energy from ATP to “walk” along the actin filaments with their cross … a type of cellular organization consisting of a threadlike row of cells, as found in certain algae, for example. Filaments are the structural proteins of the cell. [>>>] filament Part of the stamen in a flower that supports the anther. A single thread or threadlike structure or part, especially prokaryotes, in which mitosis does not.. In fungi and Actinobacteria indefinite length, sometimes several miles long axial filament Explanation: filaments. ( in an incandescent lamp ) the threadlike conductor, often of tungsten, that is heated to! 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