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Paramecium feed on microorganisms such as bacteria, algae, and yeasts. To gather food, the Paramecium makes movements with cilia to sweep prey organisms, along with some water, through the oral groove (vestibulum, or vestibule), and into the cell. The food passes from the cilia-lined oral groove into a narrower structure known as the buccal ...
However, studies have shown that when put under nutritional stress, Paramecium aurelia will undergo meiosis and subsequent fusion of gametic-like nuclei. [1] This process, defined as hemixis, a chromosomal rearrangement process, takes place in a number of steps. First, the two micronuclei of P. aurelia enlarge and divide two times to form eight ...
After the Second World War, science fiction moved towards more mutualistic relationships, as in Ted White's 1970 By Furies Possessed; Brian Stableford argues that White was consciously opposing the xenophobia of Robert Heinlein's 1951 The Puppet Masters which involved a parasitic relationship close to demonic possession, with a more positive ...
In Paramecium tetraurelia, the clonally aging line loses vitality and expires after about 200 fissions, if the cell line is not rejuvenated by conjugation or self-fertilization. The basis for clonal aging was clarified by the transplantation experiments of Aufderheide in 1986 [ 28 ] who demonstrated that the macronucleus, rather than the ...
The Man Who Awoke is a 1933 science fiction novel by Canadian writer Laurence Manning. It was initially serialized in five parts during 1933 in Wonder Stories magazine. In 1975 it was published by Ballantine Books as one complete novel. Norman Winters puts himself into suspended animation for 5,000 years at a time. The stories detail his ...
This process is commonly employed as a plot device in science fiction narratives. It is frequently utilized to transport a character from the past to the future (a form of forward-only time travel ) or to facilitate interstellar space travel , which necessitates an extended journey for months or years (referring to space travel in fiction ).
"Call Me Joe" is a science fiction novelette by American writer Poul Anderson (1926–2001), first published in Astounding Science Fiction in April 1957. [1] It has been frequently anthologized, [ 2 ] including in The Science Fiction Hall of Fame, Volume Two (1973), a collection of unusually outstanding works selected by the Science Fiction ...
"The Possessed" was first published in the March 1953 issue of Dynamic Science Fiction. [2] The year is occasionally incorrectly listed as 1952. [3] It was subsequently published in the collection Reach for Tomorrow in 1956 as well as in collections and anthologies such as The Collected Stories of Arthur C. Clarke and More Than One Universe.