Navigation Links
Protozoa


Protozoa (in Greek protos = first and zoon = animal) are single-celled creatures with nuclei that show some characteristics usually associated with animals, most notably mobility and heterotrophy. They belong among the eukaryotes, and are often grouped in the kingdom Protista together with the plant-like algae. In some newer schemes, however, most algae are classified in the kingdoms Plantae and Chromista, and in such cases the remaining forms may be classified as a kingdom Protozoa.

Protozoa have traditionally been divided on the basis of locomotion, although this is no longer believed to represent genuine relationships:

Most protozoans are too small to be seen with the naked eye - most are around 0.01-0.05 mm, although forms up to 0.5 mm are still fairly common - but can easily be found under a microscope. Protozoa are ubiquitous throughout aqueous environments and the soil, and play an important role in their ecology. A few are also important parasites.

External links, resources, references


'"/>


(Date:7/30/2014)... searching through a massive collection of 20-million-year-old amber found ... and the effort is yielding fresh insights into ancient ... the collection is fully curated, a task that will ... Dominican amber collection in the world, the researchers report. ... is that of a pygmy locust, a tiny grasshopper ...
(Date:7/30/2014)... Steven Chown has been awarded the Scientific Committee ... in Antarctic Research. , SCAR, an inter-disciplinary international ... international scientific research in the Antarctic region, and ... the Earth system. The organisation also provides scientific ... responsible for governing the region. , The medal ...
(Date:7/30/2014)... therapies for spinal cord injury (SCI), traumatic brain injury ... great deal has been learned over the past 30 ... factors that regulate axon growth, but this large body ... therapeutics. Prof. Lemmon and his team from University of ... root causes, but a consensus is emerging that one ...
Breaking Biology News(10 mins):Decades-old amber collection offers new views of a lost world 2
... study of the sense of smell lends support ... both the shape and the vibrational characteristics of odorant molecules. ... Physics , demonstrates the feasibility of the theory first ... molecule,s chemical bonds the wagging, stretching and rocking of ...
... women who take the time to read food ... findings are from a recently released study authored by ... the Institute of Agriculture,s Department of Agricultural and Resource ... Santiago de Compostela in Spain, the University of Arkansas ...
... Group on Ruminants led by Elena Albanell, lecturer in ... have successfully achieved to prevent sheep and goats from ... grapevines when grazing. By using the natural mechanism of ... ruminants, making them more willing to eliminate undesirable plants ...
Cached Biology News:Odorant shape and vibration likely lead to olfaction satisfaction 2Odorant shape and vibration likely lead to olfaction satisfaction 3Selective grazing and aversion to olive and grape leaves achieved in goats and sheep 2
Other biology definitionOther Tags