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cell size

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cell size

Postby student » Mon Dec 06, 2004 5:40 pm

how big is the average human cell? and how big is the average virus?
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Postby biostudent84 » Mon Dec 06, 2004 7:02 pm

Big and little! Cells very in size depending on what they do. The female gamete is the only one you can see...it is the size of a period on a piece of paper. The male gamete is 100 times smaller. The sciatic nerve can be over a meter long, and runs from your back to your foot. Viruses generally are much smaller...less than any light microscope can see.
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What

Postby Inuyasha » Wed Dec 22, 2004 6:36 pm

What type of cells do you need to know the size of?
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Postby Solid Snake » Thu Dec 23, 2004 6:37 pm

what u should know is that cells try to stay as small as possible, this is to keep they're diameter to surface area ratio as small as possible
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why?

Postby 2810712 » Sat Jan 29, 2005 12:38 pm

Why ,do U think , cells need to maintain size : surface area ration lower ?
I think for a particulas size of cell to carry out its functions properly it is essential to have certain value of surface area; it is essential for carrying out sufficient exchange of materials .

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Postby Poison » Sat Jan 29, 2005 5:45 pm

But think that volume change of something is in cube form (like m3, cm3,mm3 etc...) . But area (surface area) change is in square form. (like m2,cm2,mm2 etc...).
So they must have a proper ratio to maintain optimum transport.
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Postby thank.darwin » Sun Jan 30, 2005 1:59 am

A virus is around - 25-200 nm
What type of human cell?
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Postby Poison » Sun Jan 30, 2005 4:03 pm

the biggest human cell is egg. ( about 200-250 micron)
the smallest human cell is lymphosite(about 3-4 micron)
the longest human cell is neuron. (one of them is about 1.5 m)
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