Difference between revisions of "Sizes of things"
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*A typical cell size is 10μm, (0.01mm) some [[w:pollen|pollen]] is a bit smaller than that but is made of several cells. The [[w:Cell membrane|cell membrane]] (wall) is about 10nm thick for animals cells. | *A typical cell size is 10μm, (0.01mm) some [[w:pollen|pollen]] is a bit smaller than that but is made of several cells. The [[w:Cell membrane|cell membrane]] (wall) is about 10nm thick for animals cells. | ||
**But the [[w:cell nucleus|cell nucleus]] is 11-22μm and is typically about 10% of the total volume, so the cell would have to be about 50-100μm. Typical mammalian cell nucleaus has 3000-4000 pores of 100nm diameter. | **But the [[w:cell nucleus|cell nucleus]] is 11-22μm and is typically about 10% of the total volume, so the cell would have to be about 50-100μm. Typical mammalian cell nucleaus has 3000-4000 pores of 100nm diameter. | ||
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Revision as of 03:53, 19 September 2006
- 1014 (100 trillion) cells in the Human body
- A typical cell size is 10μm, (0.01mm) some pollen is a bit smaller than that but is made of several cells. The cell membrane (wall) is about 10nm thick for animals cells.
- But the cell nucleus is 11-22μm and is typically about 10% of the total volume, so the cell would have to be about 50-100μm. Typical mammalian cell nucleaus has 3000-4000 pores of 100nm diameter.
