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]
The electron micrograph shows a )yao1m o6j9;tb:xmc bn a u . fei ) sbisqlxt a(s4h/x.xi;y4l(.3uam* xnimal cell.
A.
B.
C.
D.
参考答案: D
本题详细解析:
Choice D has visible cristae and is oval-shaped; it is a mitochondrion, it)gzzhf;zm +) ysr *rm.vxwgv j+6 ll*3 evolved asm3h xfjmy g; w)*g)rz+vrl6.zv*z+ls a consequence of endosymbiosis.
Choice A is the cytoplasm, Choice B is the nucleus, and Choice C is a vacuole. Only the mitochondria and chloroplasts' origin are explained by endosymbiotic theory.
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