单词 | organelle |
释义 | organelle (once / 909178 pages) n An organelle is one small part of a cell that has a very specific function or job. The nucleus itself is an organelle. The different parts of a cell, especially the ones that are separated from the rest of the cell by a membrane, are known as organelles. Chloroplast, which converts sunlight to energy, in an important organelle in plants, and mitochondria, which create energy from the breakdown of sugars, is a vital organelle in most organisms, including humans. Organelle is a diminutive of organ, from the idea that just as organs support the body, organelles support the individual cell. WORD FAMILYorganelle: organelles USAGE EXAMPLESThe latest level of detail is to look at different proteins within organelles. Economist(Dec 08, 2016) They then fuse with organelles called lysosomes, which carry enzymes that help dissolve whatever is inside. New York Times(Dec 04, 2016) These two Rab proteins are part of a subfamily that is implicated in trafficking to the lysosomes and to lysosome-like organelles. Nature(Nov 08, 2016) n a specialized part of a cell; analogous to an organ the first organelle to be identified was the nucleus Syn|Hypo|Hyper cell organ, cell organelle cilium a hairlike projection from the surface of a cell; provides locomotion in free-swimming unicellular organisms lysosomean organelle found in the cytoplasm of most cells (especially in leukocytes and liver and kidney cells) cell nucleus, karyon, nucleusa part of the cell containing DNA and RNA and responsible for growth and reproduction nucleole, nucleolusa small round body of protein in a cell nucleus; such organelles contain RNA and are involved in protein synthesis chondriosome, mitochondrionan organelle containing enzymes responsible for producing energy centrioleone of a pair of small cylindrical cell organelles near the nucleus in animal cells; composed of nine triplet microtubules and form the asters during mitosis ribosomean organelle in the cytoplasm of a living cell; they attach to mRNA and move down it one codon at a time and then stop until tRNA brings the required amino acid; when it reaches a stop codon it falls apart and releases the completed protein molecule for use by the cell pronucleusthe nucleus of the ovum or sperm after fertilization but before they fuse to form the nucleus of the zygote sarcosomea large mitochondrion in a striated muscle fiber subthalamic nucleusan oval mass of grey matter located in the caudal part of the subthalamus; associated with the striate body organ a fully differentiated structural and functional unit in an animal that is specialized for some particular function |
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