moisboss9144 moisboss9144

22-10-2019
Biology

contestada

What are three attributes of mitochondria and chloroplasts that suggest they were once free-living bacteria?

Respuesta :

marianaegarciaperedo marianaegarciaperedo

27-10-2019

Answer:

1- They have circular DNA, RNA and 70s ribosomes

2- They reproduce by binary fission

3- They can synthezise ATP

Explanation:

Mitochondria and chloroplasts are semi-autonomous organelles that are similar in many aspects:

Both of them have a similar size with bacterias,

Both of them have enzymes that synthesize ATP,

Both of them have DNA, RNA, and 70s ribosomes, these last ones characteristic of prokaryotes. They are capable of synthesizing proteins. Their DNA is circular and double-stranded,

Both of them reproduce by binary fission, as prokaryotes do.

Because of all of these characteristics, mitochondria and chloroplasts are suggested to be once free-living bacterias.

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