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 statement about eukaryotic yiw q m1j*f.0hl6j(ky *jdxs/cel lk7/r+, xbh0l0stxjqls is correct?
A. Eukaryotic chromosomes are circular and the DNA is associated with histone proteins
B. Eukaryotic cells have looped DNA molecules which are not associated with proteins in the nucleus
C. Eukaryotic cells have linear DNA molecules associated with proteins
D. Eukaryotic cells have linear DNA molecules that are not associated with histone proteins
参考答案: C
本题详细解析:
The chromosomes of eukaryotes are linear, and the DNA is cd1ufadr oc1i2r-lv1+lx x w;k /,vpsl2g5jq -oiled around histone proteins (Choice C). Choice A is incorrect because eukaryotic DNA molecules are not circular. Choice B is 5d21c;wsf2 -a q, vv1-j og+l rrlxux1 lpi/dkincorrect because eukaryotic cells do not have looped DNA in the nucleus. Choice D is incorrect because the linear DNA molecules in eukaryotic cells are coiled around histone proteins.
|