• genus
  • 1752, Modern Latin Paramecium , the genus name, coined from Greek paramekes 'oblong, oval,' from para- 'on one side' (see para- (1)) + mekos 'length,' related to makros 'long,' from PIE root *mak- 'long, thin. (etymonline.com)
  • In 1773, O. F. Müller, the first researcher to place the genus within the Linnaean system of taxonomy, adopted the name Paramecium, but changed the spelling to Paramœcium. (wikipedia.org)
  • structures
  • Other characteristic structures found in paramecia include water-regulating contractile vacuoles, two different types of nuclei, and filamentous trichocysts, which may be involved in defense or extended for anchoring purposes during feeding. (fsu.edu)
  • She studied the effects of direct and indirect radiation on sea urchin eggs, on the structures that control the salt concentration in paramecium, as well as hydration and dehydration of living cells. (wikipedia.org)
  • Biology
  • In biology, Kappa organism or Kappa particle refers to inheritable cytoplasmic symbionts, occurring in some strains of the ciliate Paramecium. (wikipedia.org)
  • oblong
  • The name "Paramecium"-constructed from the Greek παραμήκης (paramēkēs, "oblong") -- was coined in 1752 by the English microscopist John Hill, who applied the name generally to "Animalcules which have no visible limbs or tails, and are of an irregularly oblong figure. (wikipedia.org)
  • Journal
  • In 1924 her first article, "On the excretory apparatus in Paramecium" was published in the journal Science, making her the first African American woman to research and professionally publish in this field. (wikipedia.org)
  • cells
  • By looking at the screen, a player can guide the paramecia to eat virtual yeast cells and make them avoid Pacman -like fish. (slashdot.org)
  • makes
  • when he gets too big and conditions are right, he makes an exact copy which goes off and does its own paramecium things. (flickr.com)
  • keep
  • Paramecia keep a consistent shape because of the pellicle, a covering that is flexible but does not allow the shape of the organism to change. (reference.com)
  • name
  • Joblot gave this creature the name "Chausson," or "Slipper," and the phrase "slipper animalcule" remained in use as a colloquial epithet for Paramecium, throughout the 18th and 19th centuries. (wikipedia.org)
  • point
  • In some genera, such as Paramecium, these have a distinctive star shape, with each point being a collecting tube. (wikipedia.org)
  • This results in stopping, spinning or turning, after which point the paramecium resumes swimming forward. (wikipedia.org)
  • Another
  • If multiple avoidance reactions follow one another, it is possible for a paramecium to swim backward, though not as smoothly as swimming forward. (wikipedia.org)
  • types
  • Under certain conditions, it may be preceded by self-fertilization (autogamy), or it may follow conjugation, a sexual phenomenon in which Paramecia of compatible mating types fuse temporarily and exchange genetic material. (wikipedia.org)