what is a chromophore definition
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- Definition of chromophore - an atom or group whose presence is responsible for the colour of a compound. Definition of chromophore - an atom or group whose presence is responsible for the colour of a compound.
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Trochophore Trochophores exist as a larval form within the trochozoan clade, which include the entoprocts, molluscs, annelids, echiurans, sipunculans and nemerteans. Together, these phyla make up part of the Lophotrochozoa; it is possible that trochophore larvae were present in the life cycle of the group's common ancestor. trochophore (/ˈtrɒkɵfɔər/ ; also spelled trocophore) is a type of free-swimming planktonic marine larva with several bands of cilia. By moving their cilia rapidly, a water eddy is created.
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What is the scientific name for a mushroom? The chromophores of mushrooms are organic compounds and produce strong and vivid colors, and all colors of the spectrum can be achieved with mushroom dyes. Before the invention of synthetic dyes mushrooms were the primary source of textile dyes.
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Chromosphere The chromosphere is the second of the three main layers in the Sun's atmosphere and is roughly 3,000 to 5,000 kilometers deep. The chromosphere's rosy red color is only apparent during eclipses. The chromosphere sits just above the photosphere and below the solar transition region. The layer of the chromosphere atop the photosphere is homogeneous. A forest of hairy appearing spicules rise from the homogeneous layer some of which extend 10,000 km into the corona above. The density of the chromosp
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chromatin Define chromatin: a complex chiefly of DNA and histone in eukaryotic cells that is usually dispersed in the interphase… — chromatin in a sentence a complex chiefly of DNA and histone in eukaryotic cells that is usually dispersed in the interphase nucleus and condensed into chromosomes in…
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chromatin Medical Definition of chromatin. : a complex of a nucleic acid with basic proteins (as histone) in eukaryotic cells that is usually dispersed in the interphase nucleus and condensed into chromosomes in mitosis and meiosis.
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- For example, the high energy photons in sunlight (e.g., ultraviolet rays) can disrupt the bonds in chromophores to decolorize them. 1  Article. 2  Article. 3  Article. 4  Article. 5  Article. 6  Article. 7  Article. 8  Article.
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Plastids Chromoplasts (Greek chromo, meaning color) are colored plastids found in flower petals and sepals , fruit, and in some roots, such as carrots. They are colored because they contain pigments. These are the carotenoids, and they produce a range of coloration including yellow, orange, and red.
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Chromolithography Chromolithography is a method for making multi-colour prints. This type of colour printing stemmed from the process of lithography, and it includes all types of lithography that are printed in colour. When chromolithography is used to reproduce photographs, the term photochrome is frequently used.
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Onion Health Research Major dietary sources of quercetin include apple, tea, and onion. Recent studies at Wageningen Agricultural University, the Netherlands, showed that the absorption of quercetin from onions is twice that from tea and more than three times that from apples.
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- Definition: A chromatid is one-half of two identical copies of a replicated chromosome. During cell division, the identical copies are joined together at the region of the chromosome called the centromere. They are known as sister chromatids.
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Chromoplast The coloration of the petals and sepals on the Bee orchid is controlled by a specialized organelle in plant cells called a chromoplast. Chromoplasts are plastids, heterogeneous organelles responsible for pigment synthesis and storage in specific photosynthetic eukaryotes. It is thought that like all other plastids including chloroplasts and leucoplasts they are descended from symbiotic prokaryotes.
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- Oophorectomy definition, the operation of removing one or both ovaries; ovariectomy. See more.
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Chromatin: Structure and Function Share. By Regina Bailey. Definition: Mass of genetic material composed of DNA and proteins that condense to form chromosomes during eukaryotic cell division. Chromatin is located in the nucleus of a cell.During prophase of mitosis, chromatin fibers become coiled into chromosomes with each chromosome having two chromatids joined at a centromere.hromatin is located in the nucleus of a cell. During prophase of mitosis, chromatin fibers become coiled into chromosomes with each chromosome having two chromatids joined at a centromere.
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- A chromosome (from ancient Greek: χρωμόσωμα, chromosoma, chroma means color, soma means body) is a DNA molecule (wrapped around Histone Protein in Eukaryotes) with part or all of the genetic material of an organism. Chromosomes are normally visible under a light microscope only when the cell is undergoing the metaphase of cell division.
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Medical Definition of Telomere Telomere: The end of a chromosome. The ends of chromosomes are specialized structures that are involved in the replication and stability of DNA molecules. A telomere is a length of DNA that is made up of a repeating sequence of six nucleotide bases (TTAGGG). Small numbers of these terminal TTAGGG sequences are lost from the tips of the chromosomes, but the addition of TTAGGG repeats by the enzyme telomerase compensates for this loss.
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Chromatin Chromatin is a complex of macromolecules found in cells, consisting of DNA, protein, and RNA. The primary functions of chromatin are 1) to package DNA into a more compact, denser shape, 2) to reinforce the DNA macromolecule to allow mitosis, 3) to prevent DNA damage, and 4) to control gene expression and DNA replication.
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Stroma (3) (botany) The matrix of the chloroplast which is a thick fluid in between grana where various enzymes, molecules and ions are found, and where the dark reaction (or carbohydrate formation reactions) of photosynthesis occurs.
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Stroma (fluid) Stroma (fluid) Stroma, in botany, refers to the colorless fluid surrounding the grana within the chloroplast. Within the stroma are grana, stacks of thylakoids, the sub-organelles, the daughter cells, where photosynthesis is commenced before the chemical changes are completed in the stroma.
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chromatin Medical Definition of CHROMATIN. : a complex of a nucleic acid with basic proteins (as histone) in eukaryotic cells that is usually dispersed in the interphase nucleus and condensed into chromosomes in mitosis and meiosis.
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Chromatin DNA complexed with proteins is chromatin. Chromatin condenses to form a chromosome. The definition of chromatin is A complex of nucleic acids (e.g. DNA or RNA) and protei … ns (histones), which condenses to form a chromosome during cell division. In eukaryotic cells, it is found within the cell nucleus whereas in prokaryotic cells, it is found within the nucleoid.
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- chromatography chro·ma·tog·ra·phy (krō'mə-tŏg'rə-fē) n. Any of various techniques for the separation of complex mixtures that rely on the differential affinities of substances for a gas or liquid mobile medium and for a stationary adsorbing medium through which they pass, such as paper, gelatin, or magnesia. Also called absorption chromatography.
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chromatin Definition of chromatin : a complex chiefly of DNA and histone in eukaryotic cells that is usually dispersed in the interphase nucleus and condensed into chromosomes in mitosis and meiosis and in which the nucleosome makes up its repeating subunits In eukaryotes, the DNA interacts with the histone proteins to form a tightly packed superstructure known as chromatin.
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chromosphere Define chromosphere: the region of the atmosphere of a star (such as the sun) between the star's photosphere and its corona the region of the atmosphere of a star (such as the sun) between the star's photosphere and its corona…
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Chromatophore Chromatophores in the skin of a squid. Chromatophores are pigment-containing and light-reflecting cells, or groups of cells, found in a wide range of animals including amphibians, fish, reptiles, crustaceans and cephalopods. Mammals and birds, in contrast, have a class of cells called melanocytes for coloration.
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lophophore Definition of LOPHOPHORE. : a circular or horseshoe-shaped organ about the mouth especially of a brachiopod or bryozoan that bears tentacles and functions especially in food-getting.ADVERTISEMENT.Greek lophos crest + English-phore.weet. : a circular or horseshoe-shaped organ about the mouth especially of a brachiopod or bryozoan that bears tentacles and functions especially in food-getting.