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Home Q & A Board Biology-Related Homework Help Cell Biology
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ilohim ilohim
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11 years ago
What evidence supports the theory that mitochondria and chloroplasts in eukaryotic cells came from symbiotic relationships with bacteria?
a. a. Both chloroplasts and mitochondria contain circular DNA separate from that in the nucleus of the eukaryotic cell.
b. The cilia and flagella of eukaryotes and the coiled/spiral form of bacteria are similar.
c. There are present-day examples of eukaryotes containing either bacteria or algae.
d. all of the above
(a) is not the answer.
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wrote...
#1
11 years ago
d
wrote...
#2
11 years ago
c. There are present-day examples of eukaryotes containing either bacteria or algae.

(A) wrong: circular DNA and eukaryotic DNA are not found together in the nucleus of the eukaryotic cell - impossible
(B) wrong: eukaryotic cell cilia and flagella have different structures, and made of different subunits.
(C) both mitochondria/& chloroplast the present-day examples of bacteria in eukaryotic cell.
wrote...
#3
11 years ago
The answer is C
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