any biology experts here?
960282
Check for the optimum texture and pH for the grass.\n\n\nFor the amoeba,i guess it is contractile vacuole.
956306
This is not a pure biology question. Should be bio-chemistry.
676046
The interaction between an organism and its enviroment is dynamic. It is impossible to separate the "nature" from the "nurture" because they are intertwined. Unfortunately, many people including scientists are too caught up in this false dichotomy.
98654
Do refer to websites, such as Wikipedia, Vivisimo or Google; you will find countless articles, links and so on. Start with any scientific term, such as 'chromosome' and it will get you somewhere. Kimballs Biology Pages are a wonderful bet too.
381176
Go to www.sciencedirect.com or pubmed.\n\nYou may find some answers.
66575
try to search from these websites, i hope it helps,good luck\n\nhttp://users.rcn.com/jkimball.ma.ultranet/BiologyPages/T/TOC.html\n\nhttp://www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookTOC.html\n\nhttp://www.learner.org/channel/courses/biology/textbook/index.html
851956
First, kudos to you for being so open minded.\n\nI haven't read the Nat'l Geo article yet ... but I have it, and am anxious to read it.  Say what you will, the photos are breathtaking (but that's nothing new with Nat'l Geo).  And I have read several Dawkins books, but not that one. \n\nBut without hearing your specific counter-arguments, I don't know how to address them, or why you find the evidence to be "not of such high quality."  The evidence is actually *exceedingly* strong ... and most scientists accept it.\n\nI highly recommend two books in the "Beginners" series.  Specifically, "DNA for Beginners" and "Darwin for Beginners".   Don't be fooled by the cartoon format of these books ... they are excellent introductions to the science.\n\nBut if I can try and guess your point ... if the evidence of genetic linkage with *prehistoric* species is not of "high quality", it's because the DNA molecule (the source of all genetic material for all life on this planet) breaks down rather quickly.  Even a few hundred years is enough to start breaking down the DNA in the remains of animals.  And fossils rarely contain any genetic material.  However, this is not always true.  Occasionally, bone tissue can remain in fossils, and some DNA can be extracted (as we have done with Neanderthal, for example).  But overall, recovering genetic material from prehistoric animals is difficult.\n\nHowever, the genetic links can be reconstructed quite well by examining genetic similarities between living descendants of that prehistoric species.  If living species A, B, and C all have specific genes in common (code for the same protein, same location in the chromosomes, almost identical amino-acid structure), then this tells us that their common ancestor X had these genes.  If there is a fouth species D that has some, but not all the genes shared by A, B, and C ... then this indicates that there is a common ancestor Y that is further back that is the ancestor of all four living species.\n\nFuthermore, there is the concept of the 'molecular clock'.  This is the known rate at which transcription errors (basically 'typos') occur in DNA as it gets passed from generation to generation.  So the number of minor 'typos' found in the DNA of A, B, and C gives us a strong indication of how long ago their common ancestor X lived.  (For more info. see source.)\n\nI hope that helps.  It's hard to be more specific without knowing what your specific objections are.
744387
http://biology.about.com/\nI don't know what your scope is. \nThat site is a very great and big source of biological knowledge. There are so many topics and I hope you will find it useful.\nGood luck!
921174
http://en.wikipedia.org/wiki/Cell_%28biology%29\n\ndoes this help any?
1024670
I'd suggest you look in the front of your textbook.  It will be along the lines of "The principles of biology are. . . ."  Usually when they ask open ended questions like these they don't want a thoughtful and insightful answer like the ones given above but rather, for you to parrot the aforementioned sentence back to them.
214979
You can check out this site, it explains a step by step technique:\n\nhttp://www.pall.com/biosepra/34696_7290.asp
172396
Check here, it's a nice site for educational materials \nhttp://www.biologycorner.com/images.php
973916
look here:\n\nhttp://www.biologie.uni-hamburg.de/b-online/e18/18c.htm
633380
well i am into engineering,,,,so don know much abt biology.\nU can check this website for some good info.\nwww.wikipedia.org
1016792
Hi.\n\nWebMD has an excellent Q&A on this along with contact info to an expert. Check out:\n\nhttp://www.webmd.com/content/article/123/115100.htm\n\nBest! :-)
118188
I hope, the site "www.sciencedirect.com" will b much more helpful\n\ngud luck n tek care
903086
Too many to list and explain here, without copying and pasting  --and why should I do all your uni work for you? ;-)\n\nI will recommend a couple of good text books through.  Well worth a purchase or just get them on loan from your library...\n\nAlberts et al, Molecular Biology of the Cell\nStryer, Biochemistry\n\nIt's been since I bought mine.  Think I got editions 2 & 7 back in 1996 and I know both have been updated a couple of times since.  These are still a GREAT basic resourse for this sort of question.