本题目来源于试卷: HL Topic A2.2 Cell structure，类别为 IB生物学
[问答题]
10. Describe how eukaryotic cells are thought to have evolved from a common un 9;s0yq0hz6i;o4/dn1ux(gf hssoek bicxsnsd4g(f h 9s01 o/k;0 zeqho; 6iyubc.giuyl(r k jhc52 ;d0vy 5b4qspm*j:ellular ancestsqc (um y5 rjg4k2.0hdyij;lc p bv:*5or with a nucleus
参考答案: The common ancestor of the eukaryotic cell had a nucleus.
This cell ingested (engulfed) other unicellular prokaryotic cells.
The ingested cells were held in a small vesivle, not digested.
The ingested cells continued to live inside the cell.
After generations of evolusion these ingested cells formed chloroplasts / mitochondria.
It is a symbiotic / mutualistic relationship.
The process is called endosymbiosis.
本题详细解析:
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