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Some strains of V. cholerae are pathogenic to humans and cause a deadly disease called cholera, which can be derived from the consumption of undercooked or raw marine life species or drinking contaminated water. [2] V. cholerae was first described by Félix-Archimède Pouchet in 1849 as some kind of protozoa.
If the severe diarrhea is not treated, it can result in life-threatening dehydration and electrolyte imbalances. [17] Estimates of the ratio of asymptomatic to symptomatic infections have ranged from 3 to 100. [19] Cholera has been nicknamed the "blue death" [20] because a person's skin may turn bluish-gray from extreme loss of fluids. [21]
An example of a virus that uses the lysogenic cycle to its advantage is the Herpes Simplex Virus. [10] After first entering the lytic cycle and infecting a human host, it enters the lysogenic cycle. This allows it to travel to the nervous system's sensory neurons and remain undetected for long periods of time.
Diagram of a typical foraminiferan life cycle, showing characteristic alternation of generations. Foraminifera exhibit morphological dimorphism associated with their reproductive cycle. The gamont, or sexually reproducing haploid form, is megalospheric—that is, its proloculus, or first chamber, is proportionally large.
In biology, a biological life cycle (or just life cycle when the biological context is clear) is a series of stages of the life of an organism, that begins as a zygote, often in an egg, and concludes as an adult that reproduces, producing an offspring in the form of a new zygote which then itself goes through the same series of stages, the ...
The nutrient cycle includes the decomposition of dead bodies; bacteria are responsible for the putrefaction stage in this process. In the biological communities surrounding hydrothermal vents and cold seeps , extremophile bacteria provide the nutrients needed to sustain life by converting dissolved compounds, such as hydrogen sulphide and ...
An outbreak in North America took the life of former U.S. President James K. Polk. Cholera, believed spread from Irish immigrant ships from England, spread throughout the Mississippi river system, killing over 4,500 in St. Louis [18] and over 3,000 in New Orleans. [18] Thousands died in New York, a major destination for Irish immigrants. [18]
This microscope slide, prepared by Pacini in 1854, was clearly identified as containing the cholera bacterium. Filippo Pacini (25 May 1812 – 9 July 1883) was an Italian anatomist, posthumously famous for isolating the cholera bacterium Vibrio cholerae in 1854, well before Robert Koch's more widely accepted discoveries 30 years later.