flagellum

(noun)

a flagellum is a lash-like appendage that protrudes from the cell body of certain prokaryotic and eukaryotic cells

Related Terms

Examples of flagellum in the following topics:

  • Intermediate Filaments and Microtubules

    • Flagella (singular = flagellum) are long, hair-like structures that extend from the plasma membrane and are used to move an entire cell (for example, sperm, Euglena).
    • When present, the cell has just one flagellum or a few flagella.
    • This is an appropriate name because a single flagellum or cilium is made of a ring of nine microtubule doublets surrounding a single microtubule doublet in the center .

  • Chromalveolata: Stramenopiles

    • The unifying feature of this group is the presence of a textured, or "hairy," flagellum.
    • Many stramenopiles also have an additional flagellum that lacks hair-like projections .
    • This stramenopile cell has a single hairy flagellum and a secondary smooth flagellum.

  • Contractile Vacuoles in Microorganisms

    • Structure of Euglena: 1 - Flagellum; 2 - Eye spot / Pigment spot / Stigma; 3 - Photoreceptor; 4 - Short second flagellum; 5 - Reservoir; 6 - Basal body; 7 - Contractile vacuole; 8 - Paramylon granule; 9 - Chloroplasts; 10 - Nucleus; 11 - Nucleolus; 12 - Pellicle

  • Bryophytes

    • The gametes formed by bryophytes swim with a flagellum.

  • Fertilization

    • Fusion between the oocyte plasma membrane and sperm follows and allows the sperm nucleus, centriole, and flagellum, but not the mitochondria, to enter the oocyte.

  • Chytridiomycota: The Chytrids

    • Their gametes are the only fungal cells known to have a flagellum.

  • Male Reproductive Anatomy

    • Sperm consist of a flagellum (as a tail), a neck that contains the cell's energy-producing mitochondria, and a head that contains the genetic material .
    • Human sperm, visualized using scanning electron microscopy, have a flagellum, neck, and head.

  • Cell Structure, Metabolism, and Motility

    • (c) Euglena uses a whip-like tail called a flagellum.

  • Morphology of Sponges

    • It contains all organelles required for normal cell function, but protruding into the "open space" inside of the sponge is a mesh-like collar composed of microvilli with a single flagellum in the center of the column.

  • Endosymbiotic Theory and the Evolution of Eukaryotes

    • The mitochondrial DNA degrades in sperm when the sperm degrades in the fertilized egg or, in other instances, when the mitochondria located in the flagellum of the sperm fails to enter the egg.