Nuclear in Biological Definition
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Nuclear in Biological Definition
... cell nucleus, is cell suicide triggered by the nuclear enzyme poli(ADP-ribose) polymerase-1, or PARP-1. ... condensation into compact patches against the nuclear envelope . At this stage, the double membrane ... have already advanced in the degradation of nuclear pore proteins and have begun to degrade the ...
... is enclosed by a double membrane called the nuclear envelope . The inner and outer membrane fuse at regular intervals, forming nuclear pores . The nuclear envelope regulates and facilitates transport ...
... membrane , though it is an extension of the nuclear membrane . The ER is the site of the translation ... reticulum and Golgi apparatus. (1) Nucleus. (2) nuclear pore. (3) Rough endoplasmic reticulum (RER). (4) ... are continuous with the outer membrane of the nuclear envelope , and the cisternal space of the ER is ...
... are separated by a microtubular spindle during nuclear division. In addition to asexual cell division, ... Various tube- and sheet-like extensions of the nuclear membrane form what is called the endoplasmic ... associated in the formation of a spindle during nuclear division. Some protists have various other ...
... proteins . IFs crisscross the cytosol from the nuclear envelope to the cell membrane . Contents ... of. Lamin IFs These form a network, the nuclear lamina , that supports the nuclear envelope. There are lamin A, B, and C filaments. ...
... , together with syngamy . It is a form of nuclear division by which a diploid parent produces ... cells. The process includes the two stages of nuclear division (meiosis I and II), each usually ... on mitosis .) As described earlier, meiotic nuclear division consists of two stages, called meiosis ...
... is the process of chromosome segregation and nuclear division that follows replication of the genetic ... it a part of prophase. In this phase, the nuclear membrane dissolves in some eukaryotes, reforming ... protists undergo closed mitosis, in which the nuclear membrane persists throughout. Now kinetochores ...
... developed from knowledge gained in the study of nuclear magnetic resonance . The original name for the medical technology is nuclear magnetic resonance imaging ( NMRI ), but the word nuclear is almost universally dropped. This is done to ...
... parents. This genetic material is known as the nuclear genome of the individual, because it is found ... can be proved or disproved. Besides the nuclear DNA in the nucleus, the mitochondria in the ... genome is much easier than that based on the nuclear genome. However, testing the mitochondrial genome ...
... membrane , though it is an extension of the nuclear membrane . The ER is the site of the translation ... reticulum and Golgi apparatus. (1) Nucleus. (2) nuclear pore. (3) Rough endoplasmic reticulum (RER). (4) ... are continuous with the outer membrane of the nuclear envelope , and the cisternal space of the ER is ...
... membrane , though it is an extension of the nuclear membrane . The ER is the site of the translation ... reticulum and Golgi apparatus. (1) Nucleus. (2) nuclear pore. (3) Rough endoplasmic reticulum (RER). (4) ... are continuous with the outer membrane of the nuclear envelope , and the cisternal space of the ER is ...
... on change of transmembrane potential 3.2 nuclear receptors 3.2.1 Steroid receptors ... impulses that travel along nerves . nuclear receptors nuclear (or cytoplasmic) receptors are soluble proteins ...
... membrane , though it is an extension of the nuclear membrane . The ER is the site of the translation ... reticulum and Golgi apparatus. (1) Nucleus. (2) nuclear pore. (3) Rough endoplasmic reticulum (RER). (4) ... are continuous with the outer membrane of the nuclear envelope , and the cisternal space of the ER is ...
... is the process of chromosome segregation and nuclear division that follows replication of the genetic ... it a part of prophase. In this phase, the nuclear membrane dissolves in some eukaryotes, reforming ... protists undergo closed mitosis, in which the nuclear membrane persists throughout. Now kinetochores ...
... process is associated with the cessation of transcription and involves nuclear protein exchange. The histones are mostly displaced, and replaced by ... process is associated with the cessation of transcription and involves nuclear protein exchange. The histones are mostly displaced, and replaced by ...
... as an existing one. In a modern context, this can involve somatic cell nuclear transfer in which the nucleus is removed from an egg cell and ... links Species cloned The modern cloning techniques involving nuclear transfers have been successfully performed on several species: (in ...
... structure of the cell (they are structural components of the nuclear envelope or the sarcomeres for example). They also participate in some ... of neural cells. made of Lamin , giving structural support to the nuclear envelope. Microtubules Main article: microtubules They are ...
... produced mRNA. During early Drosophila embryogenesis there are nuclear divisions without cell division. The many nuclei that are produced ... In the blastoderm stage of Drosophila morphogenesis four types of nuclear specification can be distinguished: Anterior (head and thorax) ...
... the transport of molecules and signals into and out of the cell. The nuclear envelope is the membrane around the nucleus of the cell. The ... and transport organelle [the endoplasmic reticulum is an extension of the nuclear envelope]. The Golgi apparatus acts as the packaging and delivery ...
... to cyanobacteria. DNA sequence analysis and phylogeny suggests that nuclear DNA contains genes that probably came from the chloroplast. Some genes ... evidence that chloroplast-encoded proteins affect transcription of nuclear genes, as opposed to the more well-documented cases of nuclear-encoded ...
... produced mRNA. During early Drosophila embryogenesis there are nuclear divisions without cell division. The many nuclei that are produced ... In the blastoderm stage of Drosophila morphogenesis four types of nuclear specification can be distinguished: Anterior (head and thorax) ...
... A nuclear lamina is a dense, fibrillar meshwork composed of intermediate filaments that lines the inner surface of the nuclear envelope . ...
... stage) is the stage of meiosis or mitosis when chromosomes separate. Each chromatid moves to opposite poles of the cell (opposite ends of the nuclear spindle ). Anaphase is preceded by metaphase , by the end of which fully condensed sister chromatids are arranged in pairs, their centromeres ...
... tissue has a distinctive appearance under the microscope . Among the distinguishing traits are a large number of dividing cells, variation in nuclear size and shape, variation in cell size and shape, loss of specialized cell features, loss of normal tissue organization, and a poorly defined tumor ...
... reproduction ) in unicellular organisms . Prokaryotic cells divide by binary fission . Eukaryotic cells usually undergo a process of nuclear division, called mitosis , followed by division of the cell, called cytokinesis . A diploid cell may also undergo meiosis to produce haploid ...
... Eukaryotic cell reproduction either involves mitosis or a more complex process called meiosis . Mitosis and meiosis are sometimes called the two " nuclear division" processes. Binary fission is similar to eukaryotic cell reproduction that involves mitosis. Both lead to the production of two daughter ...
... so that it is unsuitable as a beverage. Denaturation of fissile materials is the process of transforming them so that they cannot be used in nuclear weapons . ...
... it is replicated and transmitted to offspring. In bacteria and other simple cell organisms, DNA is not separated from the cytoplasm by a nuclear envelope . In the complex cells that make up plants , animals and in other multi-celled organisms , by contrast, most of the DNA is located in ...
... and gene silencing within an organism. The study of heritable changes in gene function that occur without a change in the sequence of nuclear DNA . This includes the study of how environmental factors affecting a parent can result in changes in the way genes are expressed in the ...
... D. J. Lane, L. Simon, S. Stickel, T. M. Szaro, W. G. Weisburg, and M. L. Sogin. 1993. Evolutionary relationships within the fungi: analysis of nuclear small subunit rRNA sequences. Molecular Phylogenetics and Evolution 1:231 241. Hawksworth, D. L. 1991. The fungal dimension of biodiversity: ...
... where it seems that genes were transferred from Archaea to Eubacteria . It has also been noticed that bacterial genes exist in eukaryotic nuclear genomes and that these genes generally encode mitochondrial and plastid proteins, giving support to the endosymbiotic theory of the origin of ...
... enzymes , being secreted. Structure Figure 1: Image of nucleus , endoplasmic reticulum and Golgi apparatus: (1) Nucleus, (2) nuclear pore, (3) Rough endoplasmic reticulum (RER), (4) Smooth endoplasmic reticulum (SER), (5) Ribosome on the rough ER, (6) Proteins that are transported, ...
... of uncertain origin: perhaps from Greek histanai or from histos. Until the early 1990s, histones were dismissed as merely packing material for nuclear DNA. During the early 1990s, the regulatory functions of histones were discovered. See also Gene silencing Genetics Histone ...
... to the possibility that the human species may become extinct , either through its own actions (for example because of pollution , or the use of nuclear weapons ) or because of a natural disaster. See also Anthropology Culture Civilization homo (genus) , humanoid human ...
... occurs when a cell's membrane potential dips below its resting level . In physics , hyperpolarization is the selective polarization of nuclear spin in atoms far beyond normal thermal equilibrium. ...
... proteins). Following synthesis, rRNA molecules are attached to proteins, forming ribosomal subunits, which leave for the cytosol through nuclear pores . Function: it creates ribosomes. ...
... Nucleon is the common name used in nuclear chemistry to refer to a neutron or a proton , the components of an atom 's nucleus . The total number of nucleons in an atom is the mass ...
... can be produced in a variety of ways, including emission from electrons as they change energy states or orbitals . Photons can be created by nuclear transitions, particle-antiparticle annihilation, or any fluctuations in an electromagnetic field. Special devices like masers and lasers can ...
... External links Tree of Life Chaw, S.-M. et al. Molecular Phylogeny of Extant Gymnosperms and Seed Plant Evolution: Analysis of nuclear 18s rRNA Sequences (pdf file) Molec. Biol. Evol . 14 (1): 56-68. 1997. Botanical and vegetation databases e-Floras (Flora of China, ...
... External links Tree of Life Chaw, S.-M. et al. Molecular Phylogeny of Extant Gymnosperms and Seed Plant Evolution: Analysis of nuclear 18s rRNA Sequences (pdf file) Molec. Biol. Evol . 14 (1): 56-68. 1997. Botanical and vegetation databases e-Floras (Flora of China, ...
... is enclosed by a double membrane called the nuclear envelope . The inner and outer membrane fuse at regular intervals, forming nuclear pores . The nuclear envelope regulates and facilitates transport ...
... membrane , though it is an extension of the nuclear membrane . The ER is the site of the translation ... reticulum and Golgi apparatus. (1) Nucleus. (2) nuclear pore. (3) Rough endoplasmic reticulum (RER). (4) ... are continuous with the outer membrane of the nuclear envelope , and the cisternal space of the ER is ...
... are separated by a microtubular spindle during nuclear division. In addition to asexual cell division, ... Various tube- and sheet-like extensions of the nuclear membrane form what is called the endoplasmic ... associated in the formation of a spindle during nuclear division. Some protists have various other ...
... proteins . IFs crisscross the cytosol from the nuclear envelope to the cell membrane . Contents ... of. Lamin IFs These form a network, the nuclear lamina , that supports the nuclear envelope. There are lamin A, B, and C filaments. ...
... , together with syngamy . It is a form of nuclear division by which a diploid parent produces ... cells. The process includes the two stages of nuclear division (meiosis I and II), each usually ... on mitosis .) As described earlier, meiotic nuclear division consists of two stages, called meiosis ...
... is the process of chromosome segregation and nuclear division that follows replication of the genetic ... it a part of prophase. In this phase, the nuclear membrane dissolves in some eukaryotes, reforming ... protists undergo closed mitosis, in which the nuclear membrane persists throughout. Now kinetochores ...
... developed from knowledge gained in the study of nuclear magnetic resonance . The original name for the medical technology is nuclear magnetic resonance imaging ( NMRI ), but the word nuclear is almost universally dropped. This is done to ...
... parents. This genetic material is known as the nuclear genome of the individual, because it is found ... can be proved or disproved. Besides the nuclear DNA in the nucleus, the mitochondria in the ... genome is much easier than that based on the nuclear genome. However, testing the mitochondrial genome ...
... membrane , though it is an extension of the nuclear membrane . The ER is the site of the translation ... reticulum and Golgi apparatus. (1) Nucleus. (2) nuclear pore. (3) Rough endoplasmic reticulum (RER). (4) ... are continuous with the outer membrane of the nuclear envelope , and the cisternal space of the ER is ...
... membrane , though it is an extension of the nuclear membrane . The ER is the site of the translation ... reticulum and Golgi apparatus. (1) Nucleus. (2) nuclear pore. (3) Rough endoplasmic reticulum (RER). (4) ... are continuous with the outer membrane of the nuclear envelope , and the cisternal space of the ER is ...
... on change of transmembrane potential 3.2 nuclear receptors 3.2.1 Steroid receptors ... impulses that travel along nerves . nuclear receptors nuclear (or cytoplasmic) receptors are soluble proteins ...
... membrane , though it is an extension of the nuclear membrane . The ER is the site of the translation ... reticulum and Golgi apparatus. (1) Nucleus. (2) nuclear pore. (3) Rough endoplasmic reticulum (RER). (4) ... are continuous with the outer membrane of the nuclear envelope , and the cisternal space of the ER is ...
... is the process of chromosome segregation and nuclear division that follows replication of the genetic ... it a part of prophase. In this phase, the nuclear membrane dissolves in some eukaryotes, reforming ... protists undergo closed mitosis, in which the nuclear membrane persists throughout. Now kinetochores ...
... process is associated with the cessation of transcription and involves nuclear protein exchange. The histones are mostly displaced, and replaced by ... process is associated with the cessation of transcription and involves nuclear protein exchange. The histones are mostly displaced, and replaced by ...
... as an existing one. In a modern context, this can involve somatic cell nuclear transfer in which the nucleus is removed from an egg cell and ... links Species cloned The modern cloning techniques involving nuclear transfers have been successfully performed on several species: (in ...
... structure of the cell (they are structural components of the nuclear envelope or the sarcomeres for example). They also participate in some ... of neural cells. made of Lamin , giving structural support to the nuclear envelope. Microtubules Main article: microtubules They are ...
... produced mRNA. During early Drosophila embryogenesis there are nuclear divisions without cell division. The many nuclei that are produced ... In the blastoderm stage of Drosophila morphogenesis four types of nuclear specification can be distinguished: Anterior (head and thorax) ...
... the transport of molecules and signals into and out of the cell. The nuclear envelope is the membrane around the nucleus of the cell. The ... and transport organelle [the endoplasmic reticulum is an extension of the nuclear envelope]. The Golgi apparatus acts as the packaging and delivery ...
... to cyanobacteria. DNA sequence analysis and phylogeny suggests that nuclear DNA contains genes that probably came from the chloroplast. Some genes ... evidence that chloroplast-encoded proteins affect transcription of nuclear genes, as opposed to the more well-documented cases of nuclear-encoded ...
... produced mRNA. During early Drosophila embryogenesis there are nuclear divisions without cell division. The many nuclei that are produced ... In the blastoderm stage of Drosophila morphogenesis four types of nuclear specification can be distinguished: Anterior (head and thorax) ...
... A nuclear lamina is a dense, fibrillar meshwork composed of intermediate filaments that lines the inner surface of the nuclear envelope . ...
... stage) is the stage of meiosis or mitosis when chromosomes separate. Each chromatid moves to opposite poles of the cell (opposite ends of the nuclear spindle ). Anaphase is preceded by metaphase , by the end of which fully condensed sister chromatids are arranged in pairs, their centromeres ...
... tissue has a distinctive appearance under the microscope . Among the distinguishing traits are a large number of dividing cells, variation in nuclear size and shape, variation in cell size and shape, loss of specialized cell features, loss of normal tissue organization, and a poorly defined tumor ...
... reproduction ) in unicellular organisms . Prokaryotic cells divide by binary fission . Eukaryotic cells usually undergo a process of nuclear division, called mitosis , followed by division of the cell, called cytokinesis . A diploid cell may also undergo meiosis to produce haploid ...
... Eukaryotic cell reproduction either involves mitosis or a more complex process called meiosis . Mitosis and meiosis are sometimes called the two " nuclear division" processes. Binary fission is similar to eukaryotic cell reproduction that involves mitosis. Both lead to the production of two daughter ...
... so that it is unsuitable as a beverage. Denaturation of fissile materials is the process of transforming them so that they cannot be used in nuclear weapons . ...
... it is replicated and transmitted to offspring. In bacteria and other simple cell organisms, DNA is not separated from the cytoplasm by a nuclear envelope . In the complex cells that make up plants , animals and in other multi-celled organisms , by contrast, most of the DNA is located in ...
... and gene silencing within an organism. The study of heritable changes in gene function that occur without a change in the sequence of nuclear DNA . This includes the study of how environmental factors affecting a parent can result in changes in the way genes are expressed in the ...
... D. J. Lane, L. Simon, S. Stickel, T. M. Szaro, W. G. Weisburg, and M. L. Sogin. 1993. Evolutionary relationships within the fungi: analysis of nuclear small subunit rRNA sequences. Molecular Phylogenetics and Evolution 1:231 241. Hawksworth, D. L. 1991. The fungal dimension of biodiversity: ...
... where it seems that genes were transferred from Archaea to Eubacteria . It has also been noticed that bacterial genes exist in eukaryotic nuclear genomes and that these genes generally encode mitochondrial and plastid proteins, giving support to the endosymbiotic theory of the origin of ...
... enzymes , being secreted. Structure Figure 1: Image of nucleus , endoplasmic reticulum and Golgi apparatus: (1) Nucleus, (2) nuclear pore, (3) Rough endoplasmic reticulum (RER), (4) Smooth endoplasmic reticulum (SER), (5) Ribosome on the rough ER, (6) Proteins that are transported, ...
... of uncertain origin: perhaps from Greek histanai or from histos. Until the early 1990s, histones were dismissed as merely packing material for nuclear DNA. During the early 1990s, the regulatory functions of histones were discovered. See also Gene silencing Genetics Histone ...
... to the possibility that the human species may become extinct , either through its own actions (for example because of pollution , or the use of nuclear weapons ) or because of a natural disaster. See also Anthropology Culture Civilization homo (genus) , humanoid human ...
... occurs when a cell's membrane potential dips below its resting level . In physics , hyperpolarization is the selective polarization of nuclear spin in atoms far beyond normal thermal equilibrium. ...
... proteins). Following synthesis, rRNA molecules are attached to proteins, forming ribosomal subunits, which leave for the cytosol through nuclear pores . Function: it creates ribosomes. ...
... Nucleon is the common name used in nuclear chemistry to refer to a neutron or a proton , the components of an atom 's nucleus . The total number of nucleons in an atom is the mass ...
... can be produced in a variety of ways, including emission from electrons as they change energy states or orbitals . Photons can be created by nuclear transitions, particle-antiparticle annihilation, or any fluctuations in an electromagnetic field. Special devices like masers and lasers can ...
... External links Tree of Life Chaw, S.-M. et al. Molecular Phylogeny of Extant Gymnosperms and Seed Plant Evolution: Analysis of nuclear 18s rRNA Sequences (pdf file) Molec. Biol. Evol . 14 (1): 56-68. 1997. Botanical and vegetation databases e-Floras (Flora of China, ...
... External links Tree of Life Chaw, S.-M. et al. Molecular Phylogeny of Extant Gymnosperms and Seed Plant Evolution: Analysis of nuclear 18s rRNA Sequences (pdf file) Molec. Biol. Evol . 14 (1): 56-68. 1997. Botanical and vegetation databases e-Floras (Flora of China, ...
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HyperventilationHypervitaminosisHyphemaHyperviscosityHypnoticsHypocalcemiaHypodermicHypochondriacHypochondriasisHypoglycemiaHypogonadismHypokalemiaHypoplasticHypospadias
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