BioScience Dictionary

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | Ot.

Found Flagella 33 times.

Displaying results 1 to 10.

1. Acetobacter
Acetobacter is a genus of rod-shaped, flagellated or nonmotile Gram-negative bacteria that oxidize ethanol to acetic acid . These bacteria are commonly found on fruits and vegetables, and although they are used commercially to produce vinegar (especially Acetobacter aceti), they're considered pests by brewers and vintners.

2. Chlamydomonas
A genus of green algae consisting of more than 600 species worldwide, living in marine, freshwater, soil, and even snow environments. They are single cell ed eukaryotic organisms ranging from 5 to 100 micrometers long which can be roughly spherical, egg shaped, or elliptical. Most species have two flagella (coming out the same side) for swimming. Most of the time they are haploid and reproduce by dividing into two ( binary fission ); when they are stressed they can form gamete s which fuse to form diploid cyst s which later divide into four haploid cells. Taxonomically they have been classified under plants, animals, and protist s. Several species from this genus are important model organisms for the study of cell biology , molecular biology , genetics , plant physiology , and biotechnology . The species most commonly used in scientific experiments is Chlamydomonas reinhardtii (also known as C. reinhardi or C. reinhardii).

3. Cilium (pl. cilia)
Microtubular , hairlike structures that some single-celled organisms use for locomotion through liquids. They also cover the cells of certain tissues, such as the epithelium lining the lungs, and help those cells sweep away fluids or particles. Cilia are smaller than flagella .

4. Class Chrysophyceae (golden-brown algae)
There are about 1500 species of golden-brown algae . This class of organisms is quite diverse; some species have flagella , others move like amoeba s, others don't move on their own at all. They reproduce via cell division, create food via photosynthesis , and are characterized by having the accessory pigment fucoxanthin .

5. Class Dinophyceae (dinoflagellates)
The members of this class of fire algae (Division Pyrrophyta) are a major component of marine algae . Dinoflagellates, many of which have a very strange appearance, usually move via two flagella that beat in grooves along their bodies. These organisms, which are often red in color, can produce strong toxin s; they are responsible for the deadly red tides that can kill many fish and other marine organisms. One dinoflagellate, Gessnerium catenellum, often causes red tides on the Pacific coast and Gulf of Mexico. Filter-feeding mollusks such as clams and oysters sometimes become toxic to humans and other animals due to their eating dinoflagellates. Many species of dinoflagellates are bioluminescent ; they produce a faint light when they are disturbed, thus sometimes causing nighttime waves breaking against the shore to be faintly luminous.

6. Colcemid
A chemical substance which blocks the formation of microtubule s, thus interfering with processes and structures where microtubules are essential to function. Microtubules are important to such things as mitosis and meiosis ( spindle formation and thus proper chromosome division), cilia and flagella .

7. Dinoflagellates
Single-celled to colonial protistans characterized by two flagella , one girdling the cell and the other trailing the cell. Some dinoflagellates exist in coral, in a symbiotic relationship. These dinoflagellates are termed the zooxanthellae. Other dinoflagellates occur in such high numbers that the water is colored red, a phenomenon known as a red tide .

8. Division Pyrrophyta (fire algae)
This division is composed of marine organisms known as "fire" algae , so named because most of them are red in color. Fire algae are an important component of ocean plankton . The major class within this division is Class Dinophyceae, the dinoflagellate s. There are over 1100 species in this division. Members of Pyrrophyta are single-celled, photosynthetic organisms that move via two flagella . They store their food as starch , and their cell walls are made of cellulose . They usually reproduce asexually .

9. Euglena
Euglena is a genus of flagellate freshwater protozoan s. It contains chlorophyll and is therefore photosynthetic, but it can also be mobile and gather its own food when sunlight is absent. Because it has the characteristics of both plants and animals, it is thought to be related to/similar to the ancestral organism which gave rise to both plants and animals.

10. Fimbria (pl. fimbriae)
* Short filamentous structure on a bacterial cell; although flagella-like in structure, generally present in many copies and not involved in motility. Plays a role in adherence to surfaces and in the formation of pellicle s. See also pilus . * The finger-like projections at the ends of the fallopian tube s which face the ovaries. The fimbria collect released ova and deliver them into the tubes, which then carry the ovum or ova into the uterus .

View web definitions »

Learn more about Flagella »