| 词汇 | flagellum |
| 释义 | flagellum noun[ C ] uk /fləˈdʒel.əm/ us /fləˈdʒel.əm/pluralflagellauk /fləˈdʒel.ə/ us /fləˈdʒel.ə/ a long, thin part similar to a tail, used for movement by some cells, bacteria, and other very small organisms（某些细胞、细菌或微生物用以运动的）鞭毛 Ed Reschke/Photolibrary/GettyImages Bacteria, moulds, germs & viruses abacterial acquired immune deficiency syndrome acquired immunodeficiency syndrome adenovirus aerobe amoeba bacteriology fly agaric germicidal germophobe gnotobiotic Gram-negative listeria microbe probiotic reindeer moss respiratory syncytial virus retroviral root rot rotavirus You can also find related words, phrases, and synonyms in the topics: Cells A flagellum has been demonstrated as attached to one or both extremities. Solid food particles are taken in near base of flagella. The body is small, globular or oval and either free-swimming or fastened by one of the two flagella. The flagella are about the same size, the anterior one usually somewhat longer. There is a single flagellum. flagellum | American Dictionaryflagellum noun[ C ] us/fləˈdʒel·əm/pluralflagellaus/fləˈdʒel·ə/flagellums biology a long thin part similar to a tail, which is used for movement by some cells, bacteria, and other very small organisms Examples of flagellumflagellum Such variability and the presence of flagella and microtubules in their preparations make their data not comparable with ours. The slide was examined under 1000r magnification, and the number of flagella counted for each exflagellating gametocyte. Lateral flagella were not clearly visible, but 2-5 polar flagella (2-3 times the length of the cell) were observed. It is known that the flagella perform a propeller-like movement with a specific handedness resulting from the gear-like structure of their molecular motors. Zoospores narrowed down toward the forward end and had two flagella. Specific targeting of proteins to the flagella of trichomonads thus may be modulated by an alternative mechanism. The connecting body, as well as the proximal flagellum, are also prominently stained. After centrifugation at 400g for 5 min, most of the maturing and matured (flagellum-generating) spermatid agglutinated in sticky masses and were discarded from the suspension. Thus, the force distribution created by an activated motile flagellum will be affected by fluid viscoelasticity, as will the hydrodynamic power expended. Indeed, flagella handedness has no effect on the tumbling of short bacteria, as they make many turns before ending at a new angle. Here, we will first briefly summarize the structural design of the bacterial flagellum and its component proteins with respect to their functions and assembly mechanism. The subunit proteins are synthesized in the cell and transported to the distal end through the hollow core of the flagellum. The short terminal section of the flagellum is called the endpiece and contains only the axoneme surrounded by the plasma membrane. The propagation velocity along the flagellum is given by f. For the other parts at both ends of the flagellum, structural and functional studies are underway. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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