Can we please stop with the urban myths people?
An ostrich egg is NOT a single cell. An ostrich egg is a mass of cells surrounded by large amounts of accesory material laid down by the bird's reproductive tract. You might just as well claim that a bacterium on a 747 is the world's largest cell.
At a stretch you could argue that the YOLK of an ostrich egg is a single cell. However ostrich egg actually has a smaller yolk than that of a kiwi of a cassowary.
So in no way is the ostrich egg a contender for largest cell. Arguably a kiwi or cassowary yolk is the larget single cell.
Nor is an ovum in the ovary a possible contender at just 1/10 of a mm. There are numerous species of single celled protists that measure several millimetres in diameter and that are quite visible to the naked eye.
Sheesh. I'm not entirely sure what the largest single cell is, but I do know nonsense when I read it.
2006-07-21 10:26:33
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answer #1
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answered by Anonymous
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ANSWER #1: An ostrich egg, at 3.3 pounds is the largest single cell that exists today on our planet. It's also the largest egg, and it looks about the size of a medium cantaloupe. (Some of the dinosaurs had larger eggs. There's a dinosaur egg in the American Museum of Natural History in New York that's about the size of basketball.)
For comparison, the smallest bird egg is the bee hummingbird. You could put 4700 bee hummingbird eggs inside one ostrich egg. The bee hummingbird egg is the size of a small pea and weighs .02 ounces. (http://www.eggscape.com/trivia.html)
ANSWER #2: If you're referring to a cell with a single nucleus, probably the largest one is an egg cell in the ovary, which can measure as much as 1/10 of a mm in diameter. However, specialized cells in the body can arise via the fusion of many cells into a huge cell with many nuclei. For example, a muscle fiber is actually one very long and wide cell with many nuclei--perhaps 1/10 of a mm wide and several centimeters long. Also, the outermost layer of the placenta is made of one undivided sheet of cytoplasm containing thousands of cell nuclei--the syncytiotrophoblast--that covers the entire surface of the membranes enclosing a developing baby. So living tissue enclosed within a single cell membrane can be extremely large in animals. To my knowledge, plant cells do not show such great variability in size and are all less than 1/50
of a mm in diameter.
2006-07-21 09:23:04
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answer #2
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answered by Anonymous
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Yes, that would be correct. An unfertilized Ostrich egg is the largest cell. Once it gets fertilized with-in hours it becomes a lump of stem cells and is no longer single cellular.
A cell is a cell whether it has a standard double helical DNA or not.
2006-07-21 09:25:57
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answer #3
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answered by Bramhastra 3
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the biggest cell aint the ostrich egg or any kind of egg for that matter. bcoz an egg is made up of many cells(the egg which is the zygote continuously divides by a process called mitosis)
the biggest cell(check dis out coz i aint 2 sure) is probably the thalomargerita namibiensis
cya then
dee
2006-07-21 09:23:21
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answer #4
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answered by dee173 2
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The egg is the largest cell in the human body with a diameter of 200 micrometers.
The second largest is the megakaryocyte which is between 35 and 160 micrometers. In the male body, this would be the largest since ovum are only present in the female body.
2006-07-21 09:16:39
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answer #5
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answered by polloloco.rb67 4
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A nerve cell may be thinner but they are a lot longer than an egg. The nerve from your spine to your toe can be almost 3 feet long. In large animals such as whales or giant squid, motor neurons can be many meters long.
2006-07-21 12:56:24
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answer #6
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answered by Eric G 2
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An ostrich egg, to be specific. Actually, it would have to be a fertilized one, as until that happens the egg isn't even technically an entire cell (no complete DNA).
2006-07-21 09:14:50
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answer #7
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answered by Kay 2
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In terms of length, it is probably a nerve cell from a giant quied, or some other suitably long limbed creature. Octipii "arms" are often used to study nerve im pulses because the axons and dendrons are easily visible.
2006-07-21 09:29:03
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answer #8
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answered by Bacteria Boy 4
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definitely!!
the largest cell in the body is the female egg (or ovum)...it is the size of a dot!!!
if ur interested, the smallest cell is the sperm!!! i think that's fascinating :)
2006-07-21 09:15:56
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answer #9
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answered by ChEkNa . 4
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the biggest is ostrich egg, second the giraffe neuron
2006-07-22 00:18:40
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answer #10
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answered by Papilio paris 5
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