Are mitochondria in prokaryotes and eukaryotes the same?

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sixpence
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Are mitochondria in prokaryotes and eukaryotes the same?

Post by sixpence » Fri Jan 29, 2010 2:44 am

In terms of genes present? Also, do they have the same mt ribosomal subunits? This site
http://users.rcn.com/jkimball.ma.ultran ... somes.html

does not distinguish between mt ribosomes from pro or eukaryotes...

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JackBean
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Post by JackBean » Fri Jan 29, 2010 7:17 am

that's maybe because prokaryota do not have mitochondria (and any organelles)
http://www.biolib.cz/en/main/

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jwalin
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Post by jwalin » Fri Jan 29, 2010 11:59 am

prokaryotes don't have any membrane bound organelles
it isn't what you do that matters but it is how you do it

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jwalin
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Post by jwalin » Fri Jan 29, 2010 12:06 pm

ribosomes in prokaryotes have 70s (in easier terms smaller) ribosomes, while the eukaryotes have 80s (larger)
it isn't what you do that matters but it is how you do it

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jwalin
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Post by jwalin » Fri Jan 29, 2010 12:16 pm

some consider that if a prokaryote could engulfe another then that led us having the mitochondria (it being the engulfed prokaryote)

note: i stress upon the "consider"
it isn't what you do that matters but it is how you do it

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JackBean
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Post by JackBean » Fri Jan 29, 2010 4:29 pm

why can't you just post it into one post? You can edit them, so there is no need to write brand new posts!
http://www.biolib.cz/en/main/

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jwalin
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Post by jwalin » Sat Jan 30, 2010 3:48 am

good idea

but just for the sake of clarity
but next time i will put it in one post :(
it isn't what you do that matters but it is how you do it

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mkwaje
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Post by mkwaje » Sat Jan 30, 2010 11:22 am

I agree with the previous post that some people 'consider' the mitochondria as an ancient prokaryote engulfed by another and what resulted was a symbiotic relationship. That is how they theorized the formation of the other organelles, like chloroplasts inside eukaryotic cells. One thing that supports this thoery is the presence of mitochondrial DNA. And the chloroplasts have DNA too, even its own ribosomes and RNA! Its like another cell living inside another cell...

So to answer the question, there are no mitochondria in prokaryotes but the mitochondria itself maybe an ancient form of prokaryote.

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