本题目来源于试卷: Unity and Diversity A.4 Cell Structure，类别为 IB生物学
[单选题]
Which statements about l./rt rf rf4;s/ kftm3chloroplasts an-la*r 1g p2ct ,1 7w*;hl9bxgzj9p zawnlp ,rcd mitochondria support the endosymbiotic theory?7*xnc 2lzwhrgpjrc*-abwlz;91g tlp, a,p19
A. Chloroplasts is Contain 70S ribosomes;Mitochondria is Contain cristae
B. Chloroplasts is Found in prokaryotes;Mitochondria is Contain 80S ribosomes
C. Chloroplasts is Have a single membrane;Mitochondria is Contain circular DNA
D. Chloroplasts is Contain 70S ribosomes;Mitochondria is Have a double membrane
参考答案: D
本题详细解析:
The endosymbiotic theory states n, e rfbk(h b+c47z 4t30ch:3revyhz tthat larger prokaryotes engulfed smaller prokaryotes, which were the ancestors of modern chloroplasts and mitochondria. The smaller prokaryotes were engulfed via endocytosis, so they have their original membrane as well as the membrane of the larger prokaryote. Both chloroplasts and mitochondria have 70S ribosomes and a double ez kb 3 +7(f :0ber4tcr c3hth,z4nvhymembrane. Choice D is correct.Choice A is incorrect because the fact that mitochondria contain cristae is not due to the endosymbiotic theory. Choice B is incorrect because chloroplasts are not found in prokaryotes. Choice C is incorrect because chloroplasts have a double membrane.
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