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similarity/difference between mitochondria & choloroplas

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similarity/difference between mitochondria & choloroplas

Postby jnkdna » Tue Nov 08, 2005 1:14 pm

i have a homework question that i need some help with. it is: give 1 structural & functional difference & similarity between mitochondria & choloroplast.
plz help! tnx!! :wink:
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Postby chetanladdha » Tue Nov 08, 2005 1:50 pm

structurally, i think dna is present only in mitochondria , not in chloroplast,, also, folding of inner membrane may be other one,.. and functionally i hope u would b knowing, power house and trapping of energy..........
also u tell me if somewhere i have gone wrong,, chetan3302000@yahoo.co.in
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Postby jnkdna » Tue Nov 08, 2005 2:10 pm

tnx a lot! i dont think dna is present in chloroplast either. about the functions i only knew about the powerhouse. tnx a lot!
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Postby Juanu » Tue Nov 08, 2005 3:00 pm

Hi!

Both organelles have DNA (mitochondria and chloroplast), so that is a similarity. One difference is that chloroplasts are usually found in plants.
The main role of chloroplasts is to produce energy (in the form of ATP and NADH) using the light energy of the sun.

A good page with information is,

http://en.wikipedia.org/wiki/Chloroplast

anyway, if I can help you with something else, just write me. Bye!!

Juan
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Postby Morris » Tue Nov 08, 2005 4:50 pm

Yes, choroplasts make fotosinthesis. I'm sure that plants too have mitochondria, because they make glicolisis too and produce ATP. Is it true?
http://www.forumbiotech.forumfree.net(In italian)
http://www.forumfree.net/?c=37503 (international medicine forum)(In english)

http://u2forum.forumfree.net (in Italian)
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Postby MrMistery » Tue Nov 08, 2005 8:51 pm

It is true that both mitocondria and plastids have DNA. It resembles the DNA of Archea, having both intorns and transposoms.
Mithocondria is found in almost every eukaryotec cell on erath(very very very few exceptions). None of the 2 discussed organelles is found in bacteria. Chloroplasts(which is a special kind of plastids, see interconversion of plastids) are found in most autotrophic eukaryotes. As for the role of the organelles:
chloroplasts- dark phase of photosynthesis
mithocondira- Krebs cycle and oxidative phosphorilation within cellular respiration

Regards,
Andrew
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Postby jnkdna » Wed Nov 09, 2005 8:51 am

tnx a lot u guys!!! :D
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Postby rambo » Wed Nov 09, 2005 11:10 am

structural similarity is that they are both have to parts in chloroplast its the granum and the stoma. in mitochondrion u have the inner part where kreb is involved the the cristae. they both have two parts to handle carbon fixation.my guess.

one of the structural differences is that the cell wall in a plant is made out of fibrous protein,easy to break. our cells walls are made out of globular,other protein and phosolipids making it durable.

functional similarity is that they both need a carbon compound to enter their system, they also both need hydrogen to use high power electons. stating the fact they both are used for cell respiration.

functional differences are easy. chloroplast exhales oxygen while mitochondria inhales it. chloroplast creates gluclose when glycerate phosphate doubles and hydrogen is attached to a receptor. in mito- glucose is consumed. in chloroplast light is used in mito it is not.
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Postby MrMistery » Wed Nov 09, 2005 7:17 pm

rambo wrote:structural similarity is that they are both have to parts in chloroplast its the granum and the stoma. in mitochondrion u have the inner part where kreb is involved the the cristae. they both have two parts to handle carbon fixation.my guess.

Only the chloroplast does carbon fixation, not the mithocondria

one of the structural differences is that the cell wall in a plant is made out of fibrous protein,easy to break. our cells walls are made out of globular,other protein and phosolipids making it durable.


Animal cells do not have cell walls, only bacteria, some archea, plants and some protists have it

stating the fact they both are used for cell respiration.

Correct, with a small addition: the chloroplast only provides the stuff to burn in cell respiration, the mithocondria actually does the reactions
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