Sierra Acai Company
Sierra Acai Company
Open 7 Days a Week
MonaVie Independent Distributor
Distributor Training
Shop Online
Enroll Now
Buy Wholesale and maintain an Active status for 2 months and we will refund your $39 Distributor Fee
Friends
Buy Wholesale and maintain an Active status for 2 months and we will refund your $39 Distributor Fee
07-SEPTEMBER-2008 03:17:44 - Protozoa This article or section is missing citations or needs footnotes. Using inline citations helps guard against copyright violations and factual inaccuracies. April 2008 The grammar of this article or section needs to be improved. Please do so in accordance with 's style guidelines. by expanding it. Further information might be found on the talk page or at requests for expansion. April 2008 Leishmania donovani, a species of protozoan in a bone marrow cell Leishmania donovani, a species of protozoan in a bone marrow cell Protozoa in Greek Ï€Ï?ῶτον proton first and ζῷα zoia animals are unicellular eukaryotes, singular protozoan. While there is no exact definition of the term, most scientists use protozoan to refer to a unicellular heterotrophic protist, like amoebas and ciliates. The term algae is used for the photosynthetic microorganisms. However, the distinction between the two is often vague. For example the alga Dinobryon has chloroplasts for photosynthesis but it can also feed on organic matter and is motile. Contents 1 Characteristics 2 Classification 2.1 Sub-groups 3 References 4 External links Characteristics Protozoa usually range from 10-50 μm but can grow up to 1 mm, and are easily seen under a microscope. Protozoa exist throughout aqueous environments and soil, occupying a range of trophic levels. As predators, they prey upon unicellular or filamentous algae, bacteria, and microfungi. Protozoa play a role as both herbivores and consumers in the decomposer link of the food chain. Protozoa also play a vital role in controlling bacteria populations and biomass. Protozoa may absorb food via their cell membranes, some, eg. amoebas, surround food and engulf it, and yet others have openings or mouth pores into which they sweep food. All protozoa digest their food in stomach-like compartments called vacuoles.1 As components of the micro- and meiofauna, protozoa are an important food source for microinvertebrates. Thus, the ecological role of protozoa in the transfer of bacterial and algal production to successive trophic levels is important. Protozoa such as the malaria parasites Plasmodium spp., trypanosomes and leishmania are also important as parasites and symbionts of multicellular animals. Some protozoa have life stages alternating between proliferative stages eg trophozoites and dormant cysts. As cysts, protozoa can survive harsh conditions, such as exposure to extreme temperatures and harmful chemicals, or long periods without access to nutrients, water, or oxygen for a period of time. Being a cyst enables parasitic species to survive outside of the host, and allows their transmission from one host to another. When protozoa are in the form of trophozoites Greek, tropho=to nourish, they actively feed and grow. The process by which the protozoa takes its cyst form is called encystation, while the process of transforming back into trophozoite is called excystation. Protozoa can reproduce by binary fission or multiple fission. Some protozoa reproduce sexually, some asexually, while some use a combination, eg. Coccidia. An individual protozoan is hermaphroditic. Another name for protozoa is Acrita R. Owen, 1861. Classification Protozoa were commonly grouped in the kingdom of Protista together with the plant-like algae and fungus-like water molds and slime molds. In the 21st-century systematics, protozoans, along with ciliates, mastigophorans, and apicomplexans, are arranged as animal-like protists. However, protozoans are neither Animalia nor Metazoa with the possible exception of the enigmatic, moldy Myxozoacitation needed. Sub-groups Protozoa have traditionally been divided on the basis of their means of locomotion, although this character is no longer believed to represent genuine relationships: Flagellates eg. Giardia lambdia Amoeboids eg. Entamoeba histolytica Sporozoans eg. Plasmodium knowlesi Apicomplexa Myxozoa Microsporidia Ciliates eg. Balantidium coli References ^ 1 Protozoa, defined at Microbe World. 2006 American Society for Microbiology. Retrieved June 15, 2008. External links Berkeley.edu Retrieved from http://en..org/wiki/Protozoa Categories: Obsolete taxonomic groups | Microbiology | ProtistaHidden categories: Articles with statements since April 2008 | All articles with statements | All articles needing copy | Articles to be expanded since April 2008 | All articles to be expanded Views Article Discussion this page History Personal tools Log in / create account Navigation Main page Contents Featured content Current events Random article Search Go Search Interaction Community portal Recent changes Contact Donate to Help Toolbox What links here Related changes Upload file Special pages Printable version Permanent link Cite this page Languages العربية Català Česky Dansk Deutsch Ελληνικά Español Esperanto Ù?ارسی Hrvatski Bahasa Indonesia Italiano Latina LatvieÅ¡u Magyar МакедонÑ?ки Bahasa Melayu Nederlands 日本語 ‪Norsk bokmÃ¥l‬ ‪Norsk nynorsk‬ Plattdüütsch Polski Português Română Simple English SlovenÅ¡Ä?ina СрпÑ?ки / Srpski Suomi Svenska ไทย Tiếng Việt Türkçe Walon ä¸æ–‡ This page was last modified on 28 August 2008, at 08:29
39 Reasons to Drink Acai Juice Every Day
What is MonaVie - Watch the 8-minute video
Discovering MonaVie Video
The Power of You Video
Effects of MonaVie Active on Antioxidant Capacity in Humans
Log into your Wholesale MonaVie Account
So many of us do not eat a balanced diet, get enough sleep, have too much stress, or are impacted with toxins and pollutants. Drinking 2 ounces of MonaVie twice a day will help your body detoxify as well as build your immune system. Its the smartest thing you can do for yourself, so start today. Buying MonaVie through our company guarantees you support 7 days a week and, if you would like to share MonaVie with your family and friends we will guide you from start to finish.
1. Click on Enroll Now (30 - 55% off retail price)
2. Pay $39 for your Wholesale ID number.
3. NO minimum order required.
4. MonaVie is delivered to your door in 3 to 5 days.