THis is for a biology project plz help.
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Meat tenderizers contain enzymes that digest proteins.\n\nUse wikipedia\n\nCertain fruits, like papaya and kiwi, make meat tender naturally.
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cell walls, a nucleus, and phytoplasm
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Wood-boring bivalves of the family Teredinidae (commonly called shipworms) are known to harbor dense populations of gram-negative bacteria within specialized cells (bacteriocytes) in their gills. These symbionts are thought to provide enzymes, e.g., cellulase and dinitrogenase, which assist the host in utilizing wood as a primary food source. A cellulolytic, dinitrogen-fixing bacterium, Teredinibacter turnerae, has been isolated from the gill tissues of numerous teredinid bivalves and has been proposed to constitute the sole or predominant symbiont of this bivalve family. Here we demonstrate that one teredinid species, Lyrodus pedicellatus, contains at least four distinct bacterial 16S rRNA types within its gill bacteriocytes, one of which is identical to that of T. turnerae. Phylogenetic analyses indicate that the three newly detected ribotypes are derived from gamma proteobacteria that are related to but distinct (>6.5% sequence divergence) from T. turnerae. In situ hybridizations with 16S rRNA-directed probes demonstrated that the pattern of occurrence of symbiont ribotypes within bacteriocytes was predictable and specific, with some bacteriocytes containing two symbiont ribotypes. However, only two of the six possible pairwise combinations of the four ribotypes were observed to cooccur within the same host cells. The results presented here are consistent with the existence of a complex multiple symbiosis in this shipworm species.
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A group of animals is living in an area - foodsource = nuts. The ones with good crushing teeth will eat lots, reproduce and pass on the crushing design gene. Any with ripping design etc would be unsuccessful in gaining food and thus wouldn't reproduce and pass on the ripping gene. Eventually all members of the species have crushing teeth. Survival of the fittest etc. A lion with blunt teeth would not live long enough to pass on the genes
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i think that if you categorise it  under physics/biology/chemistry, you might get a better response.\n\nnevertheless:\n\nhttp://school.discovery.com/homeworkhelp/bjpinchbeck/bjscience.html
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There is a ton of disagreement on this subject.\n\nDo a search for lobsters and pain and you'll find sites that talk about both sides of the story.\n\nHey submitter, sorry you are too lazy to figure this out on your own. Like I said, there is a ton of disagreement. Some scientists will tell you one thing and some will tell you another. How is anyone supposed to have the "right" answer for you?
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>>>if chloropyll is implanted in to an animal cell,would it\n>>>>> become auto trophic\n\nNo. \n\nAs Masyhur points out chlorphyll is just a tiny part of an incredibly complex system of pigments and enzymes needed to harvest light.  It is really akin to asking whether you could glue a carburettor to the side of a cardborad box and turn it into an airplane. \n\nA more plausible route would be to implant entire chlorplasts into an animal cell line. That has potential, but only for narrow range of animals.\n\nSee, the thing about chloroplasts is they need light to work. And the thing about most animals is that they have evolved pigments to stop light penetrating their cells. The two conditions are mutually exclsuive. You could implant or the chlorplasts you like into a human or cockroach and they won't do anyhting because they will be permanently in the dark.\n\nWith transparent animals like jellyfish or glass fish or similar you probably could achieve some level of autotrophic activity. \n\nIn the case of a highly active animal like a fish the payoff wouldn't be worth the cost. Chlorplasts require energy to build and maintain and active animals can't afford to laze around int he sun all day. That's why the ancestors of animals abandoned their chlorophyll in the first place (did you know that all animals are descended from photosyntheic organisms?)\n\nBut with slow moving animals like jellyfish it becomes more plausible. Some jellyfish already utilise symbiotic algae to harvest sunlight, so for those species the addition of inherent chlorpplasts could be a major boon.\n\n>>>>IS IT POSSIBLE \n\nNot with todays technology. However it is entirely possible we could have the technology to implant chlorplasts within our liftimes. I dont; quite see why we would bother, but still.....
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google any science homework help site, there are good ones.  also check out wikipedia
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You've asked a rather broad question.\n\nHere's a good place to start:\n\nhttp://en.wikipedia.org/wiki/Kingdom_%28biology%29\n\nMore specific questions would be easier to answer.
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True, in fact observations that the offspring from parents of different species (where offspring are possible) are sterile was one of the key lines of evidence that lead Darwin to evolution by natural selection. ie. that once two populations of the same species become different enough, they can't interbreed thus stay separate.  \n\nIt is now established though, through many observations, that bacteria have and do pick up chunks of DNA from unrelated species of bacteria. A lot of their DNA is very mobile. I guess it depends on what you call 'kind'.
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look here:\n\nhttp://www.biologie.uni-hamburg.de/b-online/e18/18c.htm
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This question is best answered by a professional. If you are serious about this, please go to your doctor.
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I typed "9th grade biology experiment" into Yahoo Search and found some experiments.  Here's one of them: http://www.wested.org/werc/earthsystems/biology/fertilizerfrenzy.html\n\nYou may want to tweak the query to find better results.
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Interesting question for the science section
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It is a characteristic of the organism, made by nature.
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Look up 'nematodes'.\nLook here too:
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try:\n\nwww.ncbi.nlm.nih.gov\n\nnot yahoo answers