本题目来源于试卷: Form and Function B.5 Cell Specialization，类别为 IB生物学
[单选题]
Based on the Venn diagr q *hj:3svr fnaq44g4z0wy4imam, which identif o)s,n uc-f,nuies cardiac muscle cells and striated muscle , unusc-,)nf o fibres?
A. I is striated muscle fibres;II is cardiac muscle;III is neither
B. I is both;II is striated muscle fibres;III is cardiac muscle
C. I is cardiac muscle;II is both;III is skeletal muscle fibres
D. I is cardiac muscle;II is striated muscle fibres;III is neither
参考答案: D
本题详细解析:
Choice D is correct because only cardiac muscle cells are both branched and contain contractile muscle fibres, while only striated muscle fibres have multiple nuclei and contractile muscle fibres. Choice A is incorrect because striated muscle fibres are not branched and because cardiac muscle cells do not contain multiple nuclei. Choice B is incorrect because only cardiac muscle cells are branched and do not contain multiple nuclei. Choice C is incorrect because only striated muscle fibres contain multiple nuclei and are not branched.
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