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smallest organism

About microscopic forms of life, including Bacteria, Archea, protozoans, algae and fungi. Topics relating to viruses, viroids and prions also belong here.

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smallest organism

Postby ninad » Tue Dec 19, 2006 4:07 pm

which organism do you think is the smallest??
Last edited by ninad on Wed Dec 20, 2006 6:36 am, edited 1 time in total.
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Postby MrMistery » Tue Dec 19, 2006 6:14 pm

viruses are not organisms. the smallest known organisms are a kind of eubacteria called mycoplasms(from what i know, if you know anything smaller...)
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Postby Condraz23 » Tue Dec 19, 2006 10:10 pm

I agree. Viruses aren't organisms because they can't reproduce without the aid of a host. A virus is just a strand of DNA enclosed in a protein capsule.
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Postby Vibrio » Wed Dec 20, 2006 12:50 am

Some viruses have RNA as their genetic material. I guess it depends on whether or not you feel they are alive to call them organisms. They do have DNA/RNA. They do reproduce, but they have to be in a living cell to do so. The do not have all the characteristics of other living things. However, since they do have the basic necessities of them, I would consider viruses to be organisms.
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Postby destiny » Wed Dec 20, 2006 3:20 am

If we define an organism as a living thing
that is able to live independent of other organisms,
that has a metabolism, and that reproduces with
offspring identical to the parent. I guess the
smallest organisms would be bacteria.

However, when you include organisms that live as
parasites on, or in, others, then viruses are
included, and these are much smaller than bacteria. Viruses are built of RNA (or DNA) wrapped in proteins. They have different shapes and sizes.

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Postby sachin » Wed Dec 20, 2006 4:29 pm

Haemophilus influenzae (it was once thought to cause influenza) is among the smallest bacteria: 0.2–0.3 by 0.5–2.0 micrometers.

Next me one small human animal of total 6,564,499,243 of world.
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Postby destiny » Thu Dec 21, 2006 11:27 am

sachin_at_biog wrote:Haemophilus influenzae (it was once thought to cause influenza) is among the smallest bacteria: 0.2–0.3 by 0.5–2.0 micrometers.

Next me one small human animal of total 6,564,499,243 of world.


Wow. So small man...If there are humans with this kind of size, the world would be in chaos. Haha. But I know this is impossible.
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Postby Baiji » Fri Dec 22, 2006 6:01 am

Woah that's really small...
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Postby Nu_Crow » Sat Jan 13, 2007 9:32 pm

it has been recently discovered (by a spanish) a smaller than mycoplasma organism, it is an organism asociated to acarus, I don't know it's name.
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Postby sachin » Sun Jan 14, 2007 5:31 am

Try at google and tell me....... :o
Im gonna try too...... :P

Or get info from same source... :idea:
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