 hcn.org Emily Underwood 2009-04-21 16:25:01 Single-. celled. , photosynthetic algae with intricate skeletons made of pure silica, they fascinated famous 19th century German zoologist Ernst Haekel, who painted this illustration in oils. Recently they have also become fascinating to ...  azom.com unknown 2009-04-09 04:00:38 The new system is based on living diatoms, which are extremely small, single-. celled. algae, which already have shells with the nanostructure that is needed. They are allowed to settle on a transparent conductive glass surface, ...  balloon-juice.com DougJ 2009-05-12 22:50:13 @Incertus: 8-. celled. globs are alive there is no debate in science over that. The question is, are they people. 18. May 12th, 2009 at 8:04 pm Reply to this comment. flounder. I sent this earlier, I doubt it will be answered: ... From Google Blog Search: "celled" How can I get a new tourist visa after one been can celled? Q. 9 years ago my sister came from Mexico City to Laredo. When crossing the bridge the officer in charge told my sister that her mexican passport had expired. We decided to tried to cross again but this time she said that she was an American Citizen. Due to this mistake her tourist visa was can celled. Is there a way to get a new tourist visa under these circumstances? Asked by May L - Mon Aug 25 21:13:58 2008 - - 1 Answers - 0 Comments A. Making a false claim (lying) at the port of entry about being an American citizen results in a lifetime ban on travel to the United States. Your sister will NEVER be allowed to come back. No waivers, no second chances. Good luck, I hope this helps. Answered by Yak Rider - Mon Aug 25 22:22:59 2008 for how many years were single-celled organisms the only kind of life on earth? Q. Exactly as question says... I am writing an essay on first multicellular organisms and i want to throw in a fact about how long cingle celled organisms occupied the earth before the multi celled ones came along. i can't seem to find this info! so if you know i will love you FOREVER. Thanks! Asked by knumnick - Sat Mar 1 21:40:43 2008 - - 4 Answers - 0 Comments A. About 3 billion years (if we round up). Between 2.5 and 2.7 billion years if we are a little more precise: I don't know if people are reading the question correctly, and since I already got a thumbs down, somebody really doesn't like my answer. (If someone has a better source, please list it.) The question is about *single-celled organisms*. The age of single-celled organisms began with the first prokaryotes almost 4 billion years ago, did not end with endosymbiosis (as the first eukaryotes were also single-celled organisms ... like amoebas). It did not end until the arrival of the first multicellular organisms only about 1 billion years ago. That's almost 3 billion years of single-celled organisms as the only life on earth. ---… [cont.] Answered by secretsauce - Sat Mar 1 22:26:06 2008 How do single celled organisms know what to do if they don't have brains?
Q. And how do things like white blood cells or spermatazoa know how to function? How does a sperm know to burrow into an egg and not another cell? How does a white blood cell know to eat an infectious cell and not a benign cell? Asked by crow jane - Mon Mar 23 15:10:02 2009 - - 2 Answers - 0 Comments A. Movement in most single celled organisms is guided by phenomena like chemotaxis in which cellular receptors recognise environmental chemicals as being helpful or harmful and subsequently directs movement towards or away from the chemical respectivly. Similarly, white blood cells are specialized in recognizing patterns on pathogenic cells. When they come in contact with such cells they procede to phagocytize them in defense of the body. Answered by dannywisch - Mon Mar 23 15:21:42 2009 From Yahoo Answer Search: "celled" |
