Hundreds of millions of years ago, some other prehistoric microbe swallowed a cyanobacterium whole in a process called endosymbiosis.
数亿年前，其他一些史前微生物在称为内共生的过程中吞噬了整个蓝藻。
endosymbiosis
/'endəu,simbai'əusis/
英汉-汉英词典
n. 内共生
词组 | 习惯用语
您要查找的是不是：
- symbiosis n. (通常互利的)共生(现象) (人与人之间的)互利关系
endosymbiosis n. [生物] 内共生
endosymbiosis theory 内共生学说
网络短语:
endosymbiosis hypothesis 内共生起源学说；内共生假说；内共生学说
chloroplast endosymbiosis 叶绿体内共生
genetic endosymbiosis 遗传内共生现象
endosymbiosis nitrogen fixation 内共生固氮
genetic endosymbiosis of chloroplast 叶绿体的遗传内共生
原声例句
TED-Ed（视频版）
英语百科
Symbiogenesis
（重定向自Endosymbiosis）
Symbiogenesis, or endosymbiotic theory, is an evolutionary theory that explains the origin of eukaryotic cells from prokaryotes. It states that several key organelles of eukaryotes originated as a symbiosis between separate single-celled organisms. According to this theory, mitochondria, plastids (for example chloroplasts), and possibly other organelles representing formerly free-living bacteria (prokaryotes) were taken inside another cell as an endosymbiont around 1.5 billion years ago. Molecular and biochemical evidence suggest that mitochondria developed from proteobacteria (in particular, Rickettsiales, the SAR11 clade, or close relatives) and chloroplasts from cyanobacteria (in particular, nitrogen-fixing filamentous cyanobacteria).
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