A parasite feeds on or in its host and kills it; what is it called if it doesn't kill it?
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Yes, commensalism is the correct description of the relationship between mother and fetus.
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Non-living\n\nA virus is a submicroscopic obligatory parasitic particle that infects cells in biological organisms. Viruses are "non-living particles" that can only replicate when an organism reproduces the virulent RNA or DNA.
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The Fluke: The fluke is an internal parasite usually living in the host's liver. There are several species of fluke, the sheep liver fluke and Chinese liver fluke. Flukes must spend their intermediate development in special types of snails. If the snail is not present the life cycle of the fluke will end. Humans pick up flukes in several ways: Eating infected fish and walking barefooted in infected waters. Flukes contain 2 suckers on its body, one ventral and the other anterior. They have a well developed digestive system and reproduce hermaphroditically. Their eggs leave the body with the solid waste of the host.
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Yeast and fungi are parasites i.e. they dont synthesize their food  and has to thus depend upon other sourse.  They get their energy from the substrate they growing.\n\nmould or also called as fungi when grow on bread, it utilizes bread as its food, and grow, multiply and synthesize some enzymes which degrade  bread and gives bad odour.\n \ni am microbiologist myself for any other queires you can im me on arya_k2006.....hope it helps!!!
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Which parasite?\nBacterial, viral, protozoa etc = no\nLeech, insect, helminth etc = sort of \nCuckoo, vampire bat etc = yes\n\nI think there are parasites in every phyla.
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hookworms and liver flukes are parasites. Leeches might be considered parasites as well, but I'm not sure, the others I am sure of. I think the jellyfish and corals mostly eat zooplankton, that is fish ova and other tiny marine organisms. Sorry I can't help you more.\n\n16 NOV 06, 0339 hrs, GMT.
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There are many types of worms i think it depends on the type...if you say a ringworm well microscopically its pesty carnivore coz it eats you up...but if you say an earthworm well its an omnivore coz it lives down on muddy earth deep in the soil...ok human friend but for more info browse the web human friend!!!oh! more info some poeple eat worms! YUCK!
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Predation: lion and gazzeles\nparasitism:humans and tape worms. \nhope i helped!
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EARTHWORMS.  THEY FEED ON DECAYING PLANTS, DIGEST IT AND FERTILIZE THE SOIL WITH THEIR EXCREMENT.  ALSO, THE ":SLIME" THEY SECRETE ALSO KEEPS THE SOIL MOIST.
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it doesnt....it just doesnt reproduce. Now, the body can get rid of certain infections on its own which is where the virus load actually decreases.Hope that was helpful. I'm sure you were expecting some big long drawn out answer which I could give you about how antibodies in the body work....but thats not what you asked.
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Deer tick.  It has an interesting lifecycle requiring three alternating hosts.
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There are several protozoans that participate in mutualistic symbiosis with animals, they mostly reside in the gut. For example, termites would not be able to digest wood if protozoans did not live in their gut. As a matter of fact, 33-50% of a termite's biomass is protozoans or bacteria. \nCorals are highly dependent on their photosythetic symbionts (dinoflagellates).\n\nyou can read more examples at http://azolla.fc.ul.pt/aulas/Estagios/Docs/MutualisticSymbioses.pdf#search='protozoan%20mutualistic%20symbiosis' \njust scroll down to the section on protozoans.\nmore info at http://www.101science.com/Symbiosis.htm\nhope this helps!
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omg- this is such a complex thing. i just took a parasite class and we talked about nothing but worms and amoebas. worms normally enter through digestion and then burrow their heads between villi. then it grows and matures and deposits eggs through feces. some worms use proglottids, some drop eggs directly into intestines. the eggs are then released out of the anus and ready for another host or vector. some worms end up going though the lamina propria in intestines and getting into hepatic duct and getting into the blood stream. worms can then get into the heart or even encyst in muscle and crippling the muscle if enough get in there. the trichino worm gets into arm muscles and enough render the arm useless.
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Heterotrophs are organisms which do not make their own food and instead use the food prepared by the autotrophs or the producers.There are three types of heterotrophic nutrition:\n\n1.Saprophytic:In this mode of nutrition,the organisms depend upon the dead and decaying organic(containing carbon or carbon chains) matter.they derive their nutritio from thesesaprophytic heterotrophs depend on dead, decaying organic matter. There are many species of saprophytic bacteria and fungi. Saprophytic decay bacteria and fungi are essential decomposers which recycle vital nutrients back into the ecosystem. .\n.eg - mushrooms,etc.\n\n2.Parasitic:In this mode of nutrition the organism dosn't pre[are its own food.It derives its food from some other organism.The organism fom which it derives its nutrition is called the host.eg\nParasitic nutrition: e.g. taenia (taenia solium - tapeworm). This is an endoparasite, with two hosts. The adult form is found attached on the inside of human intestines, the larval form is found in the pig. The adult is made up of segments called proglottides. At one end is the scolex, which has a double row of hooks and 4 suckers to attatch to the hosts intestine. Lower segments self fertilise and are released in the hosts faeces. It has no digestive system or enzymes it directly absorbs predigested nutrients straight into its body. It has a thick outer coating (tegument) made of protien and chitin, which protects it from the hosts enzymes. It can survive in low oxygen levels. It causes little damage in healthy humans.\n\nHolozoic:Organisms that are holozoic are consumers. Primary consumers are herbivores and Secondary consumers are carnivores, some organ isms feed on both plants and animals and are called omnivores.. Each are specifically adapted to their particular type of nutrition:\n\nHerbivores: e.g. cattle and sheep are herbivores and ruminants. Ruminants digestive systems allow a high proportion of cellulose to be digested. Ruminants have 4 stomachs (rumen, reticulum, omasum and abomasum).\n\n1) food is swallowed and lands in the rumen. This contains bacteria and some protoists annd yeasts. Food remains here for upto 30 hrs. The food is often regurgitated to be chewed again (chewing the cud). The microbes break down the cellulose (with cellulase), into hexoses (breaks poly saccaride b-link). These hexoses are then fermented in anaerobic conditions into organic acids, alos alot of CO2 and methane are belched.\n2) Next food enters the reticulum, sometimes food enters here first. Food moves between the rumen and reticulum fairly freely.\n3) As the food enters the omasum, where water and organic acids are removed. No enzymes are secreted.\n4) From here on it follows a similar path as in the human gut, with enzymes being secreted etc.\n\nNB. many of the bacteria etc are also taken in with the food and digested, which makes protien digestion from the rumen even more efficient, as the microbes can convert low grade protien and urea into a high grade version that can be digested by the cow.\n\nCarnivores: e.g. cat or dog. Their digestive system is more or less the same as humans. The greatest differences being in theeir dentition and other physical and behavioural adaptations which aid their hunting.
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take Garlic, and a Black Walnut - Wormwood combo. These kill parasites in the body naturally.
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Wives tale.  Only ingesting the larvae of worms will give you the infection.  The usual method of infection is oral-fecal, meaning you ate something that wasn't washed properly or you didn't wash your hands after touching microscopic amounts of feces with larvae in it.
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Maybe prokaryotes. But I'm not sure... I think there's still a debate about them cause they're not really living creatures... They are "alive" when they are inside a host, but otherwise, they're just lifeless proteins.. :)